Do you ever...?

I don't think I'm fully straight, but I don't think I'm fully bisexual either. I prefer men most of the time, but I've been with girls and every once in a while I'll see a woman who turns me on and makes me think of being with her. I haven't found another girl to experiment with since high school though. Can anyone else relate? Anyone have any advice? I only say I don't think I'm "fully bisexual" because my mom and my grandmother are both bi and my mom has e planned her needs to me as a bisexual and I don't relate to her.