Is it normal to think about so much as a 19 year old male?

dude. don't worry about it. losen up, your fine! your a normal guy! all guys think about constantly at your age. also your studies and parents inability to discuss it with you probably contribute largely to your thoughts. as for the bi thing...well youl find out who you are in the end. a lot of people think they could be gay or bi at some point. and im sure people think about kissing members of the same ; i have once or twice but rejected the idea...i could do it but its not really for me..anyways your totally normal but if you feel weird about it maybe go see a shrink or something if you really can get over your issues.