You just couldn't help yourself could you? You had to take advantage of your cute, little babysitter's asshole. Even though she was totally willing to take your cock deep in her ass, then let you fill her mouth with your hot cum load, that still doesn't make it right. Now all you can think is "PLEASE, don't tell my wife!"
A romantic dinner will get you ass fucked all the time. A dozen roses some champagne and an anal cream pie is sure to follow. Romancing her rectum try it you will like it.