If a wife cheats on her husband by committing adultery with another man, would their marriage become invalid? If so, can they remarry after she repents?
Bismihi ta'ala
As we know, marital betrayal of this kind is a serious problem and a grave sin. Froma fiqhi perspective, she is still married to her husband, and although she committed zina, her marriage to her husband is still valid. She does need to repent, but she does not need to remarry her husband.
And Allah knows best.