So the very next day after I come home from work, I notice on facebook that Christoph had tagged Elsa in all of his posts and left a lengthy message saying "Never let me touch alcohol again, it only leads to dumb, drunk decisions." A week later I talk to Elsa's caretaker (she has a list of mental health issues) who said she is more mad at me than she is at Christoph and is acting like nothing ever happened. I feel devastated, terrible, backstabbed. I blocked them on my phone and on facebook. Since my phone has a weird blocking system all the messages go to the spam folder, and Elsa sent me a message a couple days ago saying "Hey". I don't know what to do. If anything, I'm waiting till the end of their lease where Christoph plans to move out without Elsa, and I hope when she's alone she'll realize what a horrible boyfriend he was and want my friendship back, but I know that as long as she is with him, she will listen to anything he'll tell her. Her caretaker also told me that Christoph won't speak to her about this event. I don't know what to do.