Im literally crying

Today me and boyfriend had date night but he told me he was tired so we cancelled it and then I'm laying in bed and I get a FaceTime call and I then realized it's by mistake but I listen to it n I could hear he is in a car with people n it sounded like a girl n then I heard the name sam n I'm literally crying so I kept listening and then it hangs up n few minutes after his daughter calls me asking if he was with me n I'm so done he's a piece of shit even if he wasn't with a girl he straight up lied to me that's not even forgivable because I forgave him once before but not this time

Im so heart broken I feel like I lost a part of me and I can't stop crying and I'm scared to see him at work