Am I bi?

I know this is like stupid of me 2 ask because I should know but I really dont...ok heres the thing my boyfriend thinks im bisexaul because I judge girls,it started when I saw the girls on his myspace you know 2 see if their pretty or not and I would ask him what he thought of them then he would ask me and he started saying I was bi because I would say the truth if the girl had big boobs or a big butt or if she was pretty or ugly.I've always heard that girls can judge girls but guys cant judge guys so I dont consider me bisexual.but he got me thinking and I do judge girls more than other girls who just look at them once and say what they think and he got even more convinced that I was bi when I told him I only like girl on girl porn.then he asked me if I would ever have a 3some with him and another girl and I would always joke around saying if you give me a 3some with a guy I give you 1,I started thinkin again that it wouldnt bother me 2 have a 3some but I just dont want 2 until I completely trust him.so right now I dont know what I am I mean I know im straight but I dont know if im bi or not.I know its complicated but I hope you can understand it enough 2 help me lol..

it's not really abnormal to judge girls or like only girl porn.. whatever you like best, you're only bi if you'd date and have a relationship with a girl in my opinion.

I discoverd I was bi by trying it...its fun...but you dont have to be bi to look at girls...lets face it were hott.dont stress on it youll find out when its time.and I agree with the 3sum and trust thig thats very important.if you need any advice on this subject ask me ok.

Vannilla702 Same here