Met this guy who seems to like me, he gives me long hugs, and I think he's really sweet. We don't know each other very well, he's a friend of my roommate who likes to invite a bunch of people over all the time. When he comes over, he immediately heads over to me to talk and give me a hug, and does the same when he leaves. He seems kind of shy, and I'm not sure how to hint to him that I like him back. Any tips? Thanks!