Chasten Buttigieg, who is in Somerville May 17 for his new book “I Have Something to Tell You – For Young Adults” (Atheneum, $18.99), never pursued celebrity.

It happened when he married Pete Buttigieg back in 2018 and his husband, now Biden’s Transportation Secretary, ran for president in the 2020 Democratic primaries.

“I definitely didn’t see any of this coming,” Buttigieg, 33, said in a Herald phone interview.  “But the thing that I learned when my husband was running was that telling my story was very relatable to other people.”

That story, the New York Times bestselling memoir “I Have Something to Tell You,” has now been reformatted “For Young Adults,” basically 7th and 8th graders.

“The first book was an incredible process and journey and one of the things that I really wanted to do was to make sure that this story meant something for young people, especially someone like a young Chasten.

“I’m rewriting the story for a whole generation of young people who are watching LGBTQ rights come up for debate (as if they were ever not being debated). That was important to me.

“While I was writing the book, I became a dad,” he said of Gus and Penelope, fraternal twins. “That changed how I viewed writing the book. As a former middle school teacher, I knew my audience.  So this was a thing to put out there for students who I knew might be going through something that I went through.

“I wanted to share some of the hardships but also some of the humor and write a story I wish I would have had when I was younger.

“And I’m really excited to have this version out there for teachers, parents and young people because I think now, more than ever, a story like this is really important.”

While from the same source, the two versions are quite different. “The first one was basically a timeline of my life — here’s what happened and here’s what I learned and moving on,” Buttigieg said.  “In this one I weave back and forth between how I was feeling and what I was thinking, and then what would happen in the future and what I had learned from that as a younger person.

“Lessons I learned about how to deal with people on the internet, with homophobia. How I learned to love myself.”

The Somerville Armory presents Chasten Buttigieg in conversation with Casey McQuiston,  May 17 at 7:30 p.m.