There's a girl at my school who I really like... I think about her at least once every hour-hour and a half. We're nice to eachother, sit near eachother on the bus, etc. When we went to this dumb camp thing, during meetings and dinner and stuff we kept on looking at eachother. She even laughs at my jokes (when they're not funny at all). So how can I tell if she really likes me without ruining our friendship or anything?