Cheated

My husband found out in July that i cheated. Since then he’s been spiraling out of control. We have 4 boys together andI’m trying to work on things but he doesn’t want too he just wants to do what he wants. My oldest hates me and already is wanting to live with his dad if we split up. I understand he’s hurt and i don’t have his trust but we’re never going to move past this if he keeps doing what’s he’s doing. I need advice, help and encouragement.