This guy who stares at me a lot??

ok this guy at my school who is 19 (he is from france so i think that might have something to do with why he's still in high school?) stares at me all the time and he like even smiled at me once...like the teeth bearing "you are hot" smile....and i'm 15....uhmm so i guess he thinks i'm cute or something?? uhm do you think that's a bit weird, with the age difference??? maybe he just likes younger women? lol