I doubt the neighbor expressed any such thing to your wife.
I'd be willing to bet she just said you'd had a nice chat and you're a great guy and that pissed your wife off because it made her feel guilty for not taking you back and so she jumped on you and made up all that crap. See....If everyone sees you as a wonderful guy....then she imagines folks will look at HER as the sole source of the marital troubles....so she accuses you of being nice only because you were trying to hook up with the neighbor....thus making you wear the scarlet letter again, if only in her imagination.
