I dont know what to do anymore.. Is this Really what life is?

Ok im a15 years old guy and i am not really sure about my sexuality.. im the kind of guy who doesnt have many friends. The thing is that every single person seems that the only thing they Care about is sex.. Is not like Ive never thought about it , but i actually think in other things.. Every single time i talk to a girl my dad thinks im trying to make a move on her.. Its like a guy cant have friends other than their own sex. If u hug a girl people think u r a perv . If u dont talk to a girl people think u r nervous because u like her.. The other day i went to a. Party that was. Extremely boring and i left when they started waching the basketball game and the next day my friend asks me why did i leave.. And i tell him i dont like basketball and he tells me that it didnt matter because there were hot girls in the party. And i am like so. I dont care i dont like basketball. And then he calls me gay. I dont if thats the way things are supposed to be but if they are i dont see the point of life..