This is where you hit a crossroads (in the relationship/dating sense) and with a twisted sense of self and those around you, attempt to legitimise your actions for the sole enjoyment of your own distorted reality.
The crossroads should normally be a very simple, straightforward decision. However, this person is not normal - lacking in morals, subconsciously attempting to stir the pot.
I know doing this would be wrong. But right now I really, really want to do it. It would be fun right now, and I can sort out all the shit it will cause later on. What a frenchie pickle I'm in!