Relationship Confusion

I don't know if this is the best place to post this but I think it is... When I was 14 I was taken advantage of by this guy I had just gotten out of a 2 year relationship with. After that I threw myself at every guy who looked my way, which in turn caused me to have my heart broken lots of times. I am 19 years old now and after being used and hurt by every guy ive ever known, I am engaged to this guy I really love. We fight a lot at times but I love him and he'd never take advantage of me. But, recently after being with this guy for over a year, I love him but it's a weird kind of love. I am emotionally attracted and attached to him, but girls seem to be the only thing to peak my interest as far as looks... I mean, don't get me wrong I think my fiancee is very good looking, it just doesnt peak my interest like it used to. I feel safe with him, and I do love him so it makes it very confusing... I am bisexual but I feel more attracted to girls... I just wonder is anyone can make any sense out of this or if someone has been through the same thing, and if so what do you think? Because I'm very confused. I'm happy with my fiancee, I just feel like a very big part of me is missing and idk why :/