The act of behaving like a bastard towards your partner, who you want to break up with but dont acctually have the guts to do. the idea is, if you behave like enough of an arsehole to you partner, eventually they will break up with you sparing you from acctually having to do it yourself. Usually purportrated by men but women however are not exempt from doing this either.
"hey where is Glen? I havn't seen him with you lately?"
"he wont return my calls and he is behaving like a real jerk for no reason lately. I think he is attempting a bastard break up."