Posted this before and the story keeps getting worse

Fiancé and I together for 6 years, engaged for two. Have been house hunting for a year, found a house, put and offer in and everything was good to go (settlement was supposed to be today). The beginning of this month he started acting weird. I kept bugging him and he finally said and abortion we had 5 years ago has been weighing on him and he can't handle it. Everyone is having kids and we should already have one. So he ends it. I find out her is talking to a girl but he says they are just friends and he didn't cheat and nothing happened. Today I see in his email he made dinner reservations for last week for a nice restaurant but then cancelled them. I also saw in his email that he joined a dating app. Now he says we broke up because he has to figure himself out and how to deal with the abortion but it clearly seems like he just wants to be with other people. I would have never expected this. Idk if he is sad about the abortion and is just trying to make himself feel better or what. I plan on confronting him about the dinner reservations and dating app later tonight. I would love some advice, thanks!