How can I get this girl to see that I like her without it going bad and destroying our friendship?

I like her and I don't think she knows I do so obviously I want to change that. I DO NOT however, want to put everything on the line by going outright and saying it, as it would surely destroy anything we now have. what is some way I can get the point across but not ruin our friendship?How can I get this girl to see that I like her without it going bad and destroying our friendship?
Well, i think the best way to do it would be to ask her to hang out with you somewhere casual. Like maybe to go to the mall with a few other friends or to the movies. Just somewhere that friends would normally go...and while at the place just give little hints. Like flirting but not overbearing. Tell her jokes and make her laugh. But then eventually give her eye contact that lets her know...trust me, girls can tell when a guy likes them unless they're very oblivious. Walk beside her a little closer than a friend would ( but don't freak her out) just be friendly and flirty and she should be able to get the point. To me this is a difficult way, but at least it won't freak her out and ruin your friendship with her.