AA Line Check, KKx flop and I Hit My 4 Flush

[directscooter]

No real reads on Villain, he has not been around long. This is Bodog so no PT stats and sorry for the messy HH.

Hero $135
Villain $83

9 handed folds to me.
NL $100 Hero is in MP with A [img]/images/graemlins/heart.gif[/img]A [img]/images/graemlins/club.gif[/img] and raises to $5, folds to CO who calls (short stack) and Villian on the Button who calls, blinds fold.

Flop $16 K [img]/images/graemlins/heart.gif[/img] K [img]/images/graemlins/spade.gif[/img] 2 [img]/images/graemlins/heart.gif[/img] Hero bets $12, CO folds, Villain calls.
Turn $40 J [img]/images/graemlins/heart.gif[/img] Hero checks, Villain bets $13, Hero calls.
River $66 7 [img]/images/graemlins/heart.gif[/img] Hero bets $25, Villain raises to $50.....

My thought on the flop was c-bet and take it down from any non king, so I am putting Villain on a king here most of the time. Turn I was ready to fold, but the flush draw popped up and I have just about correct odds if he definitely has a K. River bet was a value bet that I thought he would have to call with a K, but does the reraise mean I am definitely beat here, getting over 5-1 is this a call?