Etiquette when you see someones hand

[JacksonTens]

On the weekend a friend of mine accidentally saw someones hand as he flicked the card vertically when they check 'em rather than using the thumb as most do. This player didn't seem like a rookie, just a bit lazy. The player had AJ, and my friend had AQ. A dominating hand. My friend didn't want to say anything right away, he hoped he could fold out so as to avoid an immoral situation. there was a PFR, AJ called and my friend 3-bet. Original raiser called as did AJ. The flop had a queen. My friend bet and both of them called. It was at this point my friend told AJ that he'd seen his cards. The turn came another rag, my friend bet both other players called then the river. My friend bet and AJ folded. My friend won the pot and decided it was fair to give AJ nack his turn and flop bets some $12, but thought it was overkill to give him his $12 call pre flop as he would have made this play anyway. Is this fair? What would you do in this situation? [img]/images/graemlins/confused.gif[/img]