Based on prompt;
'You are a professional Matchbreaker. The opposite of a matchmaker, you're hired by concerned friends, disapproving parents, jealous exes, desperate nerds, and everyone in between to break up an existing relationship from the shadows.'
With added lines; 'Then one day, you're hired to break your own relationship. Of course, you aren't going to do that but you have to give the client something. Hilarity ensues.'