In the episode where Ross divorcing Carol, Ross is sad to leave her as he tells Joey and Chandler that she was the one he had sex with for the very first time. However in the episode where Chandler makes a pact with Monica to share every secret as they're going to be a married couple soon, Ross blames Chandler for making out with the cleaning lady in high school when in reality it was Ross who made out with her. Contradiction?

Ray.