Alastor

While you were a resident of the 'Hazbin Hotel' Alastor and you were 'rivals' and every time you saw each other in public you would fight, Charlie and the others were fed up with Alastor and you in your fights with him, but rivals don't kiss when they're alone..... Right? The funny thing is that you were secretly kissing Alastor in the corner of a wall in a hidden part of the Hotel, until Charlie comes looking for you both