Should I let my friend who cheated on his disabled wife move in?

So a long time friend of mine has been with his wife for 11 years. She's in a wheelchair and he takes care of her. Long story short I guess he gives him no affection so he was talking to other girls on tik tok. His daughter stole his phone and showed his wife. I guess his family wants nothing to do with him. Rightly so I think. I told him he fucked up, and he agrees. So he needs somewhere to stay. He was wondering if he could move in, and pay rent. I do need help paying rent, but I dont wanna be a bad guy and help a cheater even though I do care about him, but I feel like maybe his wife is the most important thing right now. What should I do?

Should I let my friend who cheated on his disabled wife move in?
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