5/10 river call?

Some guy (the button) got on my ass about calling two cold PF and then not calling on the river (I almost capped PF but decided against it). I thought the turn was worth one bet with two overcards as there was over $70 in the pot but when I didn't hit either of them I just let it go. I didn't see a problem with this play but the button gave me hell about it so I thought I would check with others. UTG was TAG. My image was fairly aggressive.

Party Poker 5/10 Hold'em (6 max, 4 handed) FTR converter on zerodivide.cx

Preflop: Hero is SB with A[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/spade.gif[/img].
<font color="#CC3333">UTG raises</font>, <font color="#CC3333">Button 3-bets</font>, Hero calls, <font color="#666666">1 fold</font>, UTG calls.

Flop: (10 SB) 2[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, UTG checks, <font color="#CC3333">Button bets</font>, Hero calls, UTG calls.

Turn: (6.50 BB) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, <font color="#CC3333">UTG bets</font>, Button folds, Hero calls.

River: (8.50 BB) 6[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">UTG bets</font>, Hero folds.

Final Pot: 9.50 BB