The emotional pain never goes away, but Tom Goodwin is never alone.

Goodwin’s son Weslee died in June 2014, a victim of suicide. He was just 20.

The Mets’ first-base coach said without the support of these Mets, who are going to the World Series to play the Royals beginning Tuesday in Kansas City, one of Goodwin’s former teams, he never would have been able to make it.

When the Mets talk about being a team, about being together to support one another on and off the field, this is what it means.

It’s not about living day by day, Goodwin told The Post, it’s living “moment by moment.”

“Nobody knows how to react. I didn’t know what was supposed to happen, and I pray to God that they never find out what it’s like,’’ he said.

Goodwin looked across the field and said: “They have come together for me. They’ve brought me into their families. They rallied for me and have just been there for me since Day 1. It happened, it’s something I don’t think would have happened any other place.

“These guys,’’ he said with emotion in his voice, “have given me space, but they’ve given me love at the same time.’’

When Goodwin’s son Satchel is with the team, whether it’s during spring training or various trips throughout the season, he is taken under the wing of coaches and players. He becomes the 26th Met.

“These guys have Satchel on their Facebooks and Twitters and all that kind of stuff,’’ Goodwin said. “It’s been great how they’ve kind of let me into their family from the stuff that has happened to my immediate family.

“They’re the reason I was able to get back to work, and that means a lot to see how much a guy like Dan Murphy has grown. He’s got a family now, and it’s a great feeling coming in here every day.”

Goodwin has played a huge part in the Mets’ success, especially in their running game during the postseason, when the Mets ran the Cubs ragged — and don’t forget Murphy’s silent steal of third the clinching game against the Dodgers.

“Sometimes Daniel thinks he’s invisible, and that game he was,’’ Goodwin said.

Through it all, Goodwin said he has felt Weslee’s presence.

“I’ve had days and moments where I could feel him here,’’ Goodwin said.

“I’ve told the guys, if you see me at first base crying or whatever, I say, ‘I’m OK, I’m just having a moment with my son.’

“When I get in the locker room, every now and then I just have to get away. I was thinking about him the day we clinched the [NL] East in Cincinnati. I was thinking how happy he would be. So every time we celebrate now, it’s kind of a good moment.

“You don’t want anybody to have to go through this. You can’t put it in perspective, but it does make me realize about the good stuff that goes in life, that you have to appreciate.

“I haven’t gotten to any support groups yet. I have some guys back home [in Texas] that I talk to. Teen suicide … we had no idea anything was wrong. It was an off day, and I was out at dinner. My phone was off. I didn’t even know how to react when I got the messages.

“I was with [bullpen coach] Ricky Bones and a friend and when I got out of the car I just broke down.”

Bones, 46, and Goodwin, 47, are close friends.

“Goody is a great guy who brings a smile every day to the ballpark,’’ Bones told The Post. “For me, it was so hard when he received the news. I didn’t know what to say, my heart was broken. I just tried to support him on a daily basis.’’

That’s all anyone could do.

“I think about Weslee every day,’’ said Goodwin, who played 14 years in the majors. “My ex-wife sent me a picture when we were in the World Series in 2002 with the Giants, and he was sitting there in Anaheim with those Thundersticks, he’s 9 years old and he’s got that beautiful little smile on his face.

“Those memories are what I think about.’’

“We clinched against the Cubs on the day before his birthday. I was all tied up on that flight home, it was a tough flight, but a good flight.

“I’m grateful for these guys getting me through these tough times.’’

Like every day, the Mets are there for Tom Goodwin and one another.