Bisexual?

So i'm 13 and I've being questioning my sexuality for some time now, Every time i'm out and i see other Girls i start to get butterflies and become attracted to there Body like there Boobs and stuff like that. When i see girls i think are cute i try to talk to them and communicate with them, But on the other hand I become attracted to Guys to and have Crushes and all, But for some reason i just feel more comfortable around girls, being

around guys make me feel awkward and werid unless i can relate to them. Am i Bi or is it normal to act this way?.....