Is it normal for me to feel like this?

Okay so I'm straight. I like guys and some like me lol.. But i recently had a girl friend tell me she liked me and me and her almost hit it off but it was like the most turned on I ever had been. The kissing, touching, everything. But this girl had soon after got really obsessed with me and told my friends and her friends about me. It was kind of embarrassing because it was just our business. But after me and her I felt like I could like girls. I always think a girl is attractive now and then and maybe have a few sexual thoughts about the person. I don't know, like does this make me straight, bi? I just happen to get really turned on by both sexes. Please no hurtful comments.