Why do men stare so hard? Does that mean he’s interested?

This guy in my class just started staring at me out of nowhere like we sit across the room from each other and he fully turns his head to the right just to stare at me. At first I wasn’t thinking nothing of it but I started to question myself like why is he staring at me blankly and sometimes I try to hold eye contact but I can’t…I don’t want to think too much of it…my professor probably even see it🫣 like did I do something wrong?