Distractions to stay faithful

My husband has to be distracted so he doesn't cheat. This is our conversation right now and I'm just so upset and hurt. He just went out and bought an Xbox and some games while he is away and he told me that I should be happy he isn't out doing other things. And that he needs to keep busy so he doesn't get in trouble with me. He has sexted other women a few times YES I'm a moron for staying but we have 2 kids and one on the way. Some feel it's a reason to walk away ASAP but I can't take care of them on my own. I have nowhere to go and it just shitty. I never thought I would end up divorced we are only 21 but I'm so sick of this I don't think I can stay anymore. Like I know if he went "distraction free" for a week he'd probably hit someone up for nudes...sorry I just want to vent I'm so just sad right now. I don't understand how it came to this.