How can you tell if you like someone?

It depends on you. You may just feel attracted to them and want to spend all your time right next to them, and you'd be so happy with that. For other people, you may get butterflies when you're around them, and you'd get nervous if you were around them.

There's no one right answer for this question. Since everyones different, there's a lot of different ways of crushing on someone. For instance someone could crush on someones and get butterflies or they could get nervous when they think, see or hear their crush. It just differs, but when you yourself is crushing on someone you'll know it.( =

they're in youe dreams,and you talk about them constently

really the best way to figure this out is to experience it your self, but i find when i like some one i think about them alot, and i smile when they talk to me, and when there not around i feel kinda lonely or sad, cuz for some reason i want to see them, and some times i even dream about the person i like,