Boys are stupid…. mostly Boys, you should tell girls you think they are pretty, if you think that they are amazing and beautiful.. say something, it may not work out, but what if. If the girl likes you back, that is there dream for you to come up to them and say they are beautiful and you really like there personality. If you know they like you back and you don't tell them your feelings, that's stupid, if you are scared or socially awkward, it's ok, they are probably just as scared.