So me and my GF has been dating for a long time now, she was my first (I was her .. ??) and it's getting pretty serious but I reallllllllly want to have sex with other girls before I'm really tied down. Theres a really good looking girl I know who is always trying to get me to hang out with her and I have a feeling it'd lead to sex. I would never carry on 2 relationships at once, all I want is to continue dating my GF and have sex with a couple girls on the side to "test out other vaginas" since she is the only one I've been with.. I know it sounds shitty but I don't want to ask for a break.