Is it normal that i'm thinking of my classmates having sex?

Well there are those two guys in my class who are really hot and their bodies are so perfect and I imagine them having sex, sometimes really hardcore sex,but some others i imagine them as a really cute couple kissing tenderly and really romanticly and sweet.it's like i have made a relationship between them in my head. that's not so uncommon for me doing this with characters in series and movies but i think that's different.... i ship 'em!
so am i normal or a freaking weirdo??? vote!