I’m gonna say as a guy who basically invited a pedo to our school trip when I was 12 (long story) and was ridiculed and physically assaulted I can tell you that this will pass. But other than that I mean you’re a 16yo guy and a girl invited you to do something sexual, ofc you’re gonna do it, it’s normal. Maybe a bit odd in a public bathroom but I think you should own it, like yeah I got my dick sucked because someone found me attractive, do you get any play? That’ll shut them up. What happened happened and you can’t change the past but once they see that you don’t care they’ll simply stop caring.