If she's your real friend, she won't get mad at you or anything for liking the guy she likes. Try and have some fun with this problem! If your friend says, "OMG he's so cute!" Say back, "I know, right?" Don't try and pretend you don't like him. Then your friend will think you don't want her to like him. If she doesn't approve off you liking him, she's probably not really your friend.