Ben Platt and Beanie Feldstein met at a bat mitzvah when they were preteens.

Beanie Feldstein and Ben Platt have been best friends since they were young. Jordan Strauss/Invision/AP

Ben Platt and Beanie Feldstein went on to successful careers on Broadway and in Hollywood, and they are still the best of friends.

Feldstein told Seth Meyers in 2017 that she met Platt at a bat mitzvah, and they immediately hit it off. However, this was before they had cell phones, so they didn't become best friends until Platt started attending the same school as her in ninth grade.

"The second week of school he got his braces off, and he texted me like 'I got my braces off,' and I left my class to come see his teeth," she said. "I'm such a goody-goody and I love school, so he was like 'I must mean a lot to you.'"

In June 2019, Platt posted several photos on Instagram from throughout their friendship to celebrate Feldstein's birthday. He wrote, "Happy 26th Birthday to my twin-soulmate-wife-mother-spirit-guide of over a decade @beaniefeldstein. Thank you for filling my life with endless love and vegan snacks. I love you forever."