Leaving MetLife Stadium in 2015, after the second of two Taylor Swift shows I attended during her “1989” tour, I had only one thought on my mind: If Taylor were playing a third night, I’d be there with bells on.

That’s how I found myself with tickets to the full trio of Taylor’s “Reputation” tour dates at the same stadium three years later.

After fees, I forked over nearly $600 to see my longtime pop idol grace the same stage for three consecutive nights. (For comparison, a general-admission pass to Coachella costs $429.)

So earlier this month, I set out for three days’ worth of song, snakes and Swift — but never could anticipated how the story would end. Here’s how it all went down.

Friday

5:05: I leave work early with my colleague Chelsea, who’s also got tickets for tonight’s show. It’s my goal to arrive before Charli XCX — Taylor’s first opening act and another one of my favorite artists — goes on.

5:30: Penn Station is sweltering and jam-packed with Swifties in Taylor-themed costumes. I spy a couple of “Shake It Off” ballerinas and more than a few fans in literal snake getups. We board a crowded train to MetLife Stadium. (Welcome to New York — it’s been waiting for you.)

7:10: Made it! I find my strategically chosen seat right next to the first of Taylor’s two B-stages, and Charli starts her set.

7:50: Second opener Camila Cabello is up. While dancing to “Havana,” I befriend the concert-goer on my left. She asks whether this is my first “Reputation” show. Yes, I tell her, but I’m going all to all three of this weekend’s dates. “Me too,” she replies, “but I’ve already seen it in two other cities.” My three-show streak suddenly seems tame in comparison.

8:30: Camila finishes her set and I dash off to buy a hot dog, which I wolf down while huddled in a corner alone. Chic!

8:50: IT’S TAYLOR TIME!!! The stadium goes dark, and the opening strains of “…Ready For It?” echo around me. I am, indeed, ready for it.

8:51: I was most definitely not ready for it. I’m in danger of losing my voice on night one, screaming the lyrics at the top of my lungs.

8:55: Up next is “I Did Something Bad,” one of my favorites from “Reputation.” The live staging includes both fireworks and flames, which are precisely employed to match the song’s beat.

9:00: “I grew up going to the Jersey Shore every single summer!” Taylor exclaims, which is news to me even as a megafan. Call her TayWoww.

9:15: The stage goes dark once again, and a video plays that I’ll call “American Horror Story: Taylor Swift.” Lots of jump cuts, scratchy film, shadows — and, of course, snakes galore. I feel like Ryan Murphy and Taylor would really hit it off.

9:30: During her performance of “Delicate,” Taylor soars over to the first B-stage via a suspended carriage wrapped in twinkly lights. She’s wearing a beautiful beaded blue-and-red dress that she’ll later compare to a Tide Pod on Instagram.

9:35: Taylor brings Charli XCX and Camila Cabello back out for “Shake It Off” — mere feet away from where I’m standing. I shriek-sing along, snapping iPhone photos like a madwoman as confetti rains down. I can’t believe how close I am! At one point, I swear Taylor winks at me.

9:55: Fans are packed like sardines on either side of the barricaded path Taylor will cross to move between her two B-stages. As she runs through the crowd, Taylor grasps — not just high-fives! — the hand of every person she possibly can.

10:05: After singing “Blank Space” and “Dress,” Taylor boards a second flying carriage — this one shaped like a snake’s skeleton — back to the main stage, performing “Bad Blood” in midair. She blends the track with “Should’ve Said No,” a song from her 2006 debut album, and fans of “country Taylor” lose their minds.

10:20: Taylor mashes up her 2010 track “Long Live” with “Reputation” piano ballad “New Year’s Day,” but momentarily flubs the opening of the latter. “Piano is hard,” she says, starting over. It’s a comfort to know that even Taylor Swift makes mistakes sometimes.

11:00: That’s a wrap on night one! During the New Jersey Transit ride home, our entire car breaks into an impromptu singalong. I’m almost too exhausted to join in. Almost.

Saturday

7: My boyfriend Ryan and I arrive at MetLife for Taylor Take Two. It’s the first time he’ll have ever seen her live — a fact that none of my friends or family, all of whom know how seriously I take my Swiftie status, can quite believe.

7:15: Tonight’s forecast includes rain, and lots of it. The first few drops start falling during Charli XCX’s set, and everyone whips out their plastic ponchos.

8:30: After both openers’ sets, we grab pizza and a soft pretzel from a concessions stand, and attempt to eat while leaning against a wall. Ryan promptly drops his entire $20 meal on the ground; we shake it off and fill up on beers instead.

8:38: The drizzle outside has turned into a full-on downpour.

8:50: BABY, LET THE GAMES BEGIN.

9:10: “You know your real friends will show up for you rain or shine,” Taylor tells us. “And that is why, regardless of what happens tonight, this crowd to me is absolutely sacred.” The stadium roars its approval.

9:18: Ryan, who at this point is two beers deep and has the hood of his rain jacket pulled as tightly around his face as it’ll go, leaves to use the restroom during “Look What You Made Me Do.” In doing so, he misses out on both seeing a 50-foot inflatable cobra dramatically rise from the stage and Tiffany Haddish delivering the song’s line about the “old Taylor” being dead. Time those bathroom breaks, people!

9:48: At every stop on her “Reputation” tour, Taylor has performed a surprise song on the first B-stage. Tonight’s is the aptly chosen “Fearless.” Indeed, when it comes to making you want to dance in a storm in your best dress — or a $2.50 plastic emergency poncho from Duane Reade — there’s really nobody like Taylor Swift.

10:05: Ryan is very impressed by Taylor’s flying snake-skeleton carriage, and wants everyone to know it.

10:15: Now he’s going down a Google rabbit hole trying to figure out the mechanics behind the tour’s synchronized light-up bracelets, which every fan receives upon check-in.

10:30: Taylor introduces “Getaway Car” with a beautiful short film set in a salt desert, which I’m moderately to extremely confident is also a teaser for the track’s forthcoming full music video. You heard it here first, friends.

10:50: She did it: Taylor performed her full two-plus-hour show, despite the torrential downpour. “WELL?!” I ask Ryan as we make our way out of the stadium. “It had its moments,” he says with a smile and a shrug. I briefly consider breaking up with him, but suspect he had more fun than he’s willing to admit.

Sunday

8 a.m.: I wake up, check my email and freeze. There’s a message from Taylor’s publicist — whom I’d emailed months ago mentioning how excited I was for her weekend of shows — asking if I can show up a few hours early to tonight’s performance. Realizing that this means a meet-and-greet opportunity, I burst into tears, waking Ryan from his peaceful slumber. “I’M MEETHING THAYLOR THWIFT!” I scream-sputter through my nightguard.

2: I start my pre-concert prep: shower, hair, nails, outfit. If I’m going to meet my idol, I’d better look my best. I decide on some velvet shorts inspired by Taylor’s “Saturday Night Live” performance look, along with a mesh tank top and both of the snake rings I bought from Taylor’s online merch store when “Reputation” first came out.

5:45: It’s pouring by the time my friend Liza and I arrive at the designated meeting spot, and so humid that my bangs have reached DJ Tanner proportions. I’m too excited to care.

6:00: We’re escorted back to Taylor’s “Rep Room,” where refreshments and snake-themed décor await. She’s got Old Fashioneds on tap (a nod to the “Getaway Car” lyric, “I knew it from the first Old Fashioned we were cursed”) and a giant ice bucket of beers (in the song “King of My Heart,” she sings about “drinking beer out of plastic cups”). A-plus attention to detail, that Taylor.

6:30: After nearly a decade of fandom, it’s finally time for me to meet my hero. Taylor greets me with a huge hug, and I promptly black out. We talk for almost 10 minutes about . . . something? Fashion? Music? It’s a blur.

She’s incredibly nice. When it’s time for our photo op together, she grabs both of my hands, interlocking her fingers with mine. My soul promptly exits my body.

8:50: ARE YOU READY FOR IT?

9:05: Taylor mashes up her “1989” single “Style” with “Love Story” and “You Belong With Me,” two hits from her earlier albums. Liza, who grew up in Nashville and is totally Team Country Taylor, is jumping up and down like a maniac.

9:50: Surprise song time! Taylor picks the “Speak Now” favorite “Enchanted.” Have you ever witnessed 60,000 people singing “This night is sparkling, don’t you let it go” in unison? It’s pretty damn enchanting.

9:55: Liza and I sprint from our seats to Taylor’s second B-stage, where she serenades the crowd with “Blank Space” and “Dress.” I’m as close to her as I was on night one — though not as close as I was just a few hours prior (!!!). Even in my residual state of shock, I manage to snap a few photos for posterity.

10:15: I’m jamming out as Taylor performs my favorite song from “Reputation,” the gospel-inspired and highly underrated “Don’t Blame Me.” It’s even better live, if that’s possible.

10:45: Since this is my third and final go-around, I know exactly when to start making my way out of the stadium in order to beat the crowds to the train. The moment Taylor thanks everyone at the end of her “We Are Never Ever Getting Back Together/This Is Why We Can’t Have Nice Things” mashup, Liza and I are headed for the exit — and my Swiftdrawal has already begun.