I took my ex back after 6 months of no contact. We had been on and off for seven years and it basically was dysfunctional and on and off. I took him back because I felt like he had possibly changed and I could tell that he really did miss me and I felt like he realized what he had. However I'm afraid, that eventually he will be back to his old ways. Do relationships like this ever work out after NC or does the guy eventually go back to his old ways?