1) See a lawyer. You need an order for child support asap when he moves out.
2) Is it only his name on the car registration? If it is, and you're not married, I imagine you have no rights. But if it's registered in both of your names, talk to the lawyer about it.
3) Same for anything else that was bought out of joint funds.
4) When he asks why you're not fighting for him, remind him that HE is the one having the affair, HE should be the one fighting to win YOU back, and he should be willing to go to couples counseling if he's sincere.
Odds are living with the OW and her kids will get old real soon. Other people's kids are not usually as entertaining as your own, and OW will be clingy since she left her marriage for him and HAS to justify it by having him live up to her expectations (which he won't. ) Your job is to secure your financial future, GAL and show your kids that you all will be just fine and continue to have fun with your kids. You can decide later if he's even worth having if he tries to come back with his sorry-a$$ excuses.
