My friend is sad because she just found out that the guy that she likes doesn't like her back. I tried to make her feel better but I didn't know what to say. So what can I say to make her feel better?

Of course anyone would be disappointed to learn this but there's not much you can say, she will get over it, in the meantime just be there for her. Make a plan for a day out together or just be her shoulder to cry on. You sound like a lovely friend to have, she is lucky to have someone that cares so much ;)

Thank u!

Tell her everyone has somebody that's right for them and think about it if she fills that way over the "wrong" person then just think about how it will fill when it's right. She will hurt for a while but trust me if they never went out or anything it want be that bad. You're a great friend to care :) I hope she find her Mr. Right