Is it immature to wear your boyfriend's clothing?

KBob93
I came home wearing my boyfriend's hoodie, which says "I pwn noobs" on it. Granted, he's 2 years younger than me (19/21) & my mom thought his hoodie was dumb. She went on to say that's high schoolish to wear your boyfriend's hoodie, and that I'm acting like a high-schooler regarding this relationship. My 17-year-old brother even concurred & said the same thing! I don't think there's anything wrong with it. I wear it around the house, & sleep in it from time to time, it's not like I skip around in public in it.
My boyfriend says it makes him feel good to see me in his hoodie because it gives the appeal that this girl belongs to him. My brother said it's an instinctual thing, as in, a tactic to mark his territory with his scent (I guess the way a wolf pees on bushes or a deer scratches his head on a tree trunk). Makes sense, I guess.

What do y'all think?
Wearing your bf's hoodie at 21 is immature
There's nothing wrong with wearing your bf's hoodie at 21
Select gender and age to cast your vote:
Is it immature to wear your boyfriend's clothing?
6 Opinion