cheating bf and family! please help.

me and my bf lived together. and while he was on work, I found out that he was cheating on me all this 6 months. our maid servant showed me a video clip how my bf raped her.

she also said that my bf was sleeping with my best friend, my 2 cousins, an escort , etc etc.. which she hide from because she was afraid of the leak of video clip by my bf if she did so.

what should be my immediate action now? my bf is on work, and I'm on leave now, I have enough money to support myself.. what should I do? how should I say him? what should I do to him in social sites??????