Basically ive been with my partner technically 3 years, we broke up for 3 months and then started to see each other then i fell pregnant. We have had arguments like all couples. He used to play games every day rather than play with our son and i suffered extremely with depression (which i have suffered with since teen years). He would be in family photos but in the background playing his console. Under his suggestion i got counselling and went on anti depressants. Eventually we signed up for a mortgage in may and it was going ok, everything settled. Then pokemon go came out and he started going out alot at night after work so wouldnt see his son and then he met some people and decided to not come home until 6am. He then told me about these people joking that he was having an affair with one of the girls. We had a fight and i stayed at my parents house (literally next street over) and didnt hear off him for 2 weeks, he then told me to come have a chat and said i needed to change my attitude and think of my son. Since being back home (for 1 week) he has continued to come home after 3am and the one day he promised to be a family he didnt come home until 10am