I looked up something called 'alienation of affection' - it's only a few states who have it, most have abolished it. Not sure why they would do that...
M 16 yrs, WH62, P54 3 adult blended kids EA 11/13, BD1 6/14 PA fall 14, BD2 2/15 Piecing 2015, BD3 12/15 Separated 4/16 WH moved OW in 5/16 Divorced 6/15/17