You can't stop other guys from hitting on you. You can be as cold as ice and SOMEONE will still hit on you if they want to. The only thing you can do is control your reaction and whether you do anything with these guys. If you're not going to do anything with these guys, then tell your boyfriend and continue going out to parties. If you think you might 'break down' at some point, then perhaps the guy isn't right for you or you're not ready to be fully committed to one person quite yet.

Alexi