I am so sorry to say, but yes, once a cheater always a cheater. I am in the process of leaving my cheating husband. I have given him chance after chance and he still insists on carrying on with the other woman. I can’t live in a marriage of 3. He has had an ongoing (2 year) affair and after finding out I have forgiven. I can no longer trust him and my respect for him is completely gone. Don’t make the same mistake I made by forgiving repeatedly, it’s just like telling him it’s okay to hurt and disrespect you.