Bisexually confused

I've only been with one girl and all the rest of my relationships have been guys. Every time I start dating a guy all I can think about is girls and when I'm single I don't know how to approach or start that ball rolling. With guys it's so much easier because they usually say something first. But I'm getting to the point where I'm so lost on who I am and who I like because girls are great and guys are okay. And I'm stuck in the middle looking in both directions and wondering if this girl liked me or if this other girl liked me and then a guy will pop up and it's like I sigh and say okay I guess you'll do.

But I also don't know if it just results from my past traumas (I was raped by an ex and I was physically assaulted by a male co-worker). I don't know what to do because I don't feel like any girl would be interested in pursuing a relationship with me anyways. So so confused...