My husband cheated on me

My husband, after various issues we’ve had and have tried to work on, cheated on me. He cheated on me the week before he was deployed to Africa. He lied to me about it and had sex without protection with her and came home (without getting a shower) and had sex with me.

He’s still trying to make it out like it’s not all his fault and keeps pointing out that he had been drinking and “had never thought about cheating sober”. I don’t know what to think.