I don't know what to do

Julia • Happily in a relationship with the love of my life!
My boyfriend and I have been together for almost two years and a month ago I found out that he was on a webcam site twice, he paid for the model. I told him I was very again this, and I just found out that he did it again today and he messaged the girl. I have no clue what to do anymore, I'm so hurt and sad and disgusted. Please help me