According to the Gentlemen's Code of Dating, a guy does not ask out a girl that his best friend likes or has just broken up with. The code would seem to be something thought up by the school Eli Williams and Jonathan Turner went to.
- Jonathan Turner violated the code ten years prior to season 3 when he dated Cynthia Harp, a girl that Eli Williams had dumped for a Spanish transfer student who could only say "yes" in English.
- Shawn asked out Topanga, knowing full well that Cory liked her, in My Best Friend's Girl.
- Jason Marsden dates Desiree right after Eric leaves her in Notorious, although the code is never mentioned.