So I remember this movie from a while back. Maybe ten years ago, but could be more. Two teen girls basically become really close friends, and have a little world of their own. They just hang out with each other all the time, but become a little bit obsessively close. There’s some kind of romantic overtones between them but they never actually get together I don’t think. At some point they end up breaking the law together. I think they might kill someone, or maybe just injure them or something. I feel like it was called something simple like ‘Happiness’ or ‘Friendship’, but obviously neither of those are right. Any ideas?