divorce, acrimonious   you’re left with nothing

divorce, amicable   Assets dividedly equally. Tarrant pleads for amicable divorce as wife seeks £17m Evening Standard headline Sept. 19 2006

divorce, messy   you're left badly off (Prenuptial agreements are booming among wealthy couples desperate to avoid the expense of a messy contested divorce settlement. Evening Standard May 7, 2008)

move on   see settle down

nice guy (as in girls don’t like nice guys, nice guys finish last ect)   man who never takes the initiative and never asks women out

settle   for what you can get

settle down   partner up, shack up, have kids, get married

settled relationship   committed, married

situation (meaning whether you’re married or not) Actually means you aren’t married. (Bit like old-fashioned “trouble” and “condition” for pregnant.)