Student Exchange Programs

so here it is i really like my boyfriend alot. but there is this guy i work with at burgerking, and he is really hot, (he’s from columbia!) and really nice, and to old for me. he’s like 19 and i’m 16. he’s an exchange student. he flirts with me, and i think he thinks i’m older too (that happens alot).how do i get myself to stop haveing a big crush on him?