I have been eating my wife after various other guys have fucked her for years. It is awesome and my wife LOVES it. Everything about it is extremely erotic.
I have done it right in front of guys who have just pulled their spent dick out of my wife and I have done it when my wife comes home from being fucked when I don't even know who just fucked her...both are incredible.
Kate says that I eat her pussy more aggressively when she has just been fucked. I think that sometimes she lets a guy fuck her just so I will eat her pussy that way.
I love it and I hope that my wife never stops fucking other guys.