I need help

I've been married for 4 years. I have a beautiful daughter that is 3 years old. I met my husband ona single group in the catholic church and I trully believe LOrd brought me in his life. He always had a bad temper and I was wondering many times if I should leave him. LASt year he was fired from his job on the church and he went to CAlifornia for a 3 months ocntract job. After 2 weeks of working he calle dme from a car dealer sying he was buying a car . We argued on the phone and he told me he would not come back anymore. Three months later he came back because he could not find a job in there He came back driving a HUMMER. I told him he had to sleep on the other room. He was mad. I tryed to find advice from a priest and they gave me some brochures of marriage conceling. I told my husband we should go to get better and he said he did not need to go there because he was happy like that. My husband is 46 years old and he is currently a manager of a nice chain of restaurants here in Florida. He makes good money but he is not happy with the amount of hours. He wants to move to a farm that will belong to him when his friends owner died. I to ld him I have no interest to live in a farm far away fo family and friendsright now. FOr retirement yes but not now with a 3 years old. The closest town is an hour away from the farm.
It has been a month since my husband start seeing somebody. I know I made lots of mistakes in our marriage and now I'm blaming myself for things not working.He tells me he never loved me he married me because he was sorry. He says we don't get a long...
All this situaion is breaking my heart I want my family back.
What should I do?