Why don't i got a gilfriend( NEED HELP)?

This is the bottom line. I'm not here to say that I'm desperate but I may be. I can't like live knowing I can't even have one next to me. I am a very cofident guy and I'm very social. Yet whoever girl I ask out is going to say no or come up an excuse. So far there has been 47 rejections in a row. I don't what's wring with me. Most girls tell me I'm "cute" or "hott", yet it makes no difference. I'm even a bad guy to like when i hit an officer, no girl even cared, though that's what the girls wanted me to be, a "villan". I feel extremely lonesome. I don't even get it, I got fat firends and they get girls, why can't i get one? Am i not meant to have one? I don't act y. I'm just 17 years old and I'm in the 11th grade. No girls even like care for me, but I don't know why. I need some advice. I even taken and studied about women and their adolescene and I can't get it. Realy I think I'm damned to get a girlfriend. I'm just invisible. I need help seriously.