Of course you should. You owe it to her to tell her about your feelings before she makes that kind of decision. Also, you say that you are sure she likes someone else, so it sounds as though you are friends with her. So before you do, make sure that you weigh the risks with the benefits, i.e. losing your friendship with her vs. discovering your true love. And anyways, the worst that can happen is that she says no.
yes
Move on and find someone else.
Wait, he might get over this girl.
Have someone else do it for you.
well you should go up to the girl and tell her how you feel about her....but if she likes someone else you have to also respect that if she doesnt have the same feelings as you do then it just simply meens that there is something better out there for you ..and there is..theres always somebody for someone
Move on
You should show him\her the real you and not some fake image of you
You shoud try to impress her and most of all be sweet and kind to her.
If they are in love with another girl then you should leave it alone completely. Eventually you'll find someone who is not involved with someone else and you don't hurt anyone, including yourself.
Sure. Why should she say noif she likes him?
Just leave them and move on
you should move on because she cant make you happy nor her self. You need to find some out there who likes you just as much to be happy