If your girl catches you mid-coitus with another woman, it’s safe to say that everybody in the room knows that the relationship is over. You don’t need to spell it out for her. You didn’t respect her enough to not cheat on her, so in the last seconds of the relationship, at least give her the pleasure of breaking up with your cheating ass. If you choose to blurt out anything short of “I’m sorry,” prepare to get run out into the street butt ass naked. Do you really want to get caught out there like that?