Homewrecking is a related term of homewrecker.

As nouns the difference between homewrecker and homewrecking

is that homewrecker is a person (male or female) who engages in romantic relations with a person who is married or engaged to be married with the result of breaking up the marriage or engagement while homewrecking is the act of one who wrecks a home; the break-up of a married couple, especially of a family, by tempting either out of their commitment.