Is it usual to fancy girls but fancy a few boys?

im a 15 year old male and I mainly fancy girls but I also sorta fancy some boys. well 2 actualy the first one is zac efron I sorta fancy him but then when I think of sleeping with him im like yuk but the other person is some one from my school and i fancy him and when I think of sleeping with him I get realy turned on. is this normal