I flop goot........but turn bad

[me454555]

Read on opponent is that he's not retarded

Party Poker 3.00/6.00 Hold'em <font color="#0000FF">(6 handed)</font> link

Preflop: Hero is Button with 8[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/spade.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises</font>, SB calls, BB calls.

Flop: (6.00 SB) T[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">BB bets</font>, <font color="#CC3333">Hero raises</font>, SB calls, BB calls.

Turn: (6.00 BB) 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets</font>, BB calls, Hero calls.

So the 7 is a bad card for and I was afraid of a strait here or possible Ax higher 2 pair but I feel I shoulda raised here nonetheless. This will henceforth be known as mistake #1

River: (9.00 BB) K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, BB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">SB raises</font>, BB folds, Hero calls.

Ok so once he checks I've gotta think my 2 pair is good here so I bet, but no I'm c/red? This smells like a better 2 pair but I feel I gotta call this b/c the pot is pretty big right?

Final Pot: 13.00 BB.