Home-wrecker (English) — A person who is blamed for the breakup of a marriage/living together, or a family is the home-wrecker. This can be the result of bad intention only to break up the couple or due to being a part of an affair (extramarital affair) with one member of a couple. A home-wrecker plays an active role in making one of the persons 'cheat'. To cheat on the other one by having an affair with one of them.
Parents who don't approve of a couple can also be home-wreckers by constantly causing turmoil.