Discovering if Im gay ?

Sure, it's possible that you're gay. But, since you like both guys and girls, you could also be bi. Or maybe you're panual (meaning you like people, regardless of their gender), since you seem to be attracted more to personalities than anything and you seem open to anyone. Only you can decide what you are, though. No one else can tell you. But it's also not necessary to label yourself. Just be with people who you like, be they male, female, FtM, MtF, whatever you like. Good luck =)