Lol, this post reminds me of this scene (about a minute in) http://www.youtube.com/watch?v=vCicqORi8Mc
I don't think anyone's going to get all the hurt really, and if they did, they'd be hypocrites. You're all doing it, so keep sharing the love (and the sperm) until one of you grows up or enters into a committed relationship (or just tires of screwing the same people) and then you'll all go in different directions and none of it will really matter anymore.