Relationship question

greengains

I just bought a new workout set today from the store and I was super excited to wear it this week. As a joke my bf put it on and ended up stretching it out a lot. He said it wasn’t an issue and that we could always just put it in the dryer and it will go back to its size but he thinks I’m being a little dramatic about getting annoyed. He didn’t know it was gonna stretch but like duh. What do y’all think?