Reject My Billionaire Ex-Husband

Moona, after seeing her husband having an affair in her own bed, was so shocked that she was muted and lost her unborn child. After the two divorced, she was fortunate to find a companion, although his mind was a bit abnormal, although life was hard, despite being made difficult by her ex-husband everywhere, she was still very happy. She just hopes every day that passes is still the same.
But one day he wakes up, remembers everything, just forgets her, what should she do?