Get back with or not?

Been divorced 2 years. My daughters father (ex husband) cheated at least 3 times known. And wanted to sit around and smoke all day. While I was at work. 2 jobs. And said I wasn't home enough to give him attention (excuse for cheating). I am still single. Now my daughters father wants to make it work. he would say it then 1 week after he would have a girlfriend. And did this about 4 maybe 5 times.
Wondering is it because he can't find anyone that will take care of him and buy him things or does he really want to get back together and make it work. From m a man view, what is he thinking. Was thinking I should make it work for my daughter.
Get back with or not?
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