I Slept With My Girlfriend's Sister - How Can I Get My Girlfriend to Forgive Me?

This is a phrase that is heard much too often. Talking about sticky situations, this is definitely one. I realize we unintentionally get ourselves into some messy positions because imperfect humans tend to do that. You slept with your girlfriend's sister; now you are having major regrets and you want to make things right with your girlfriend. At any rate what happened is only "half" your fault, what was your girlfriend's sister thinking? But that another article, let's work on your half of the blame.