Why does he tell me he loves me but does not want me?

My ex fiancé purposed in May , had been dating long distance for a year. I moved out of state (to live with him) with 2 kids in June, gave up house, job, family to be with him. The kids and I were there for 4 weeks. My youngest and his oldest did not get a long at all. The kids are: mine 11 (g) 10... Show More