In MLC, having multiple affairs/relationships is very typical. He is searching, and will not find peace until he figures it out that his family is what he really wants.
Most likely, he is searching for another you. He will never find it.
Hang in there, do not give up hope. Establish your boundaries and pray.
I agree 100 percent with the statement that until he repents and shows remorse, he in no way is ready to come back to you.
Me: 46 H:44 Together: 25 years Married: 20 years Separated: 11-30-06 Divorced 12-21-07 OW: EA began 2005 PA began end of 2006 3 children,20, 16, 6 ex asked for forgiveness 01/16/11