So, I'm not really sure if I'm bisexual or gay. I'm somewhat sure that I'm gay, but I also have really weird attractions to girls. Both romantically and sexually. So I'm not really sure. See, I don't have these feelings constantly. It's very oddly spaced out, and random. But, I'm almost always attracted to guys.
It's possible to be intermediate between gay or straight and bisexual - you can feel sexual attraction for either gender, but show a pronounced preference for one gender over the other.
Well, it sounds to me like your on the gay side of things but have some hetero attractions. I keep saying the same thing, because I made this mistake for so many years. Stop worrying about how to categorize things. It can drive you bat-shit crazy. It drove me bat-shit crazy. Try "queer" as a nice catchall term.
Through out pretty much my entire life I've had difficulty trying to understand my sexuality. In fact, I still don't really understand it today. The difference is, I kind of like it that way. I just accepted that I'm a complicated person and that makes me unique. I've chosen to embrace it and like it that way.
Is it strong enough for you to want to act on it? I do occasionally experience a brief sexually arousing thought of a girl, usually in a sexual position, that lasts no more than a minute. It isn't even remotely strong enough to cause me to act on it. It's just a passing thought that can be arousing for a brief second. I think it has more to do with hormones than genuine attraction. Never really felt that towards real life girls though