I think you can have a definate sexuality and I am and have always been straight. I think there are different types of love you can have for people...and sometimes, especially when younger you can get these (feelings) confused, it becomes blurred.
I think lots of peeps at one time or another are confused about their sexuality and their identity in general...who they are. Discovering and being comfortable with yourself....it comes together as you grow up (both mentally and physically).
BTW if the above doesnt make sense, its because Ive overdosed on the recommended dosage of the ol' covonia cough medicine...