Because of one person.
You’re scared to put yourself out there now. You don’t open up to anyone anymore. You don’t let a lot of people in like you used too. You’ve changed. You’re more guarded. Your mindset is different now. You’re not the same person you were before, just because of one person.
If I’m a sarcastic asshole when I talk to you its either because I really like you and feel comfortable teasing you
Or I really hate you and don’t care if you know it
Good luck figuring out which one