Bi?

So I've always thought I was straight, but since last summer I've been questioning my sexuality. I only see myself in a relationship with a guy, but I find myself sexually attracted to guys as well as girls. I know that as a teen I sometimes noticed other girls' and women's cleavage or boobs and I've always watched lesbian porn as well as straight ones, but I never really thought about it. I know that more straight women watch those videos or read those stories. But last summer I started to really question myself. Sometimes I have periods where I'm mainly into guys, and sometimes the thought of a girl kissing me and making out or experimenting turns me on more than the thought of a guy. I think that if a girl ever tried to kiss me in real life, I would probably be willing to see how it feels. I'm not sure what to make of all this, because I've never been in a relationship with anyone (romantically or sexually) and I've only had 1 crush on a guy so far. So any advice or ideas are welcome.

I'm bi, and you sound a lot like myself early on when I wasn't sure. It was the same with me, I'd watch gay porn from time to time, not really thinking anything of it. Then, I got really into the idea of doing stuff with another guy. At that point, eventually it just became obvious. I haven't lost any of my attractions, I didn't "turn gay" or anything. I just realized that I still like girls, but that I like guys too in a different sort of way though.

As for only having had the one crush, that's probably that your just not naturally a very romantic person. I rarely get crushes in that sense. I haven't had a crush in a emotional, romantic sense on anyone since I was like 13. I often become interested in other people of both genders sexually, but emotionally my mind just never really gets involved that much. I'm sure it would if I were with someone and cared about them, but I haven't really experienced that very much. There's a good chance your probably similar in that sense, since it sounds like you don't really typically have emotional feelings for girls or guys.

I'm not entirely sure about the whole "born this way" thing is true of everyone. For some people, like myself and likely you too, it kind of evolves over time. It may have always been there on some level, but as time goes on things just change. It becomes more obvious to the person for various reasons.

I think having fantasies about both genders does not make you bi, but this is not the point. The point is that even if you are there is no problem at all. Personally, I do not like labels as they tend to stick even if you change as a person. I never had real crushes as a teenager and I got into a super long term relationship at 17 that lasted for 6 years. I questioned my sexuality after high school for a month as I felt asexual but after getting into a relationship I though I was straight. However, three months after my breakup I started dating women and I am until now. So I would say the only worry is coming out, but until you are sure and have acted on your fantasies you shouldn;t worry