How does one recover from cheating ?

part of me wants to forgive and forget and work on our relationship as he did admit it was a drunk mistake . And I do always believe in forgiving people for the sake of your own .

But the other part of me can’t forget the thought of his lips kissing other lips , his hands caressing someone else’s body and overall his body intertwining with someone else just sickens me . I just can’t shake that thought and can’t believe him anymore .