Cheating ex bf

I found out my ex bf Facebook password , I seen all the things he lied about & seen that he is now talking to females he told me he had no interest in & didn't care about. I also seen message to his brothers or friends talking about he was with another female & now he's on his way to pick me up from work. Like I just found out a lot of things and Idk how to feel about it now. He also told me that he would never cheat and that he hadn't had sex with any other female but me but now I'm seeing voice messages on Facebook of him talking about having sex with other females.      WE JUST BROKE UP!!!!!