My fiancé and I have been together three years and have a two year old together. For awhile I've known he's had a sex addiction( from him getting angry when I don't want it to him talking to other girls all the time). A few months ago I found out he PAID someone to have sex with him. I found out by looking in his phone. He seemed genuinely upset and said he doesn't know why he did it. So silly me thought he wouldn't again, but have since found a few messages on his phone about him texting with people for sex. I haven't told him I have seen these, I'm not sure what to do. I don't know if he can change this, or it's just this addiction that he can't fight. He has adhd and has struggled with other addictions in the past (smoking spice) that we managed to get through. But I don't know what to do about this:/