Flop: Fold.

Pot odds aren't good, and buddy is either playing a draw of his own, to which you're possibly buggered if you hit, or has TP, which is going to get scared off my most cards in the deck, but is still enough to beat you.

Turn: Call.
The fact that he didn't increase his bet is consistent with the [img]/images/graemlins/spade.gif[/img] draw. You now have 6 legitimate outs, and 9 possibly counterfeit outs. If the flush wasn't potentially poison, I'd like your play. But as it stands, I'd call.

River:
His small bet cries out "Well, I had the best hand, but by now I'm probably buggered." We can now discount the idea he had a draw alone.

He called your river raise, so I don't think it's all that likely he's going to fold here. I think you'll get called down with K9 or Q9s. He's faced with putting down $10 to win $36. If he had a draw + pair, it was likely along the lines of A8, in which case your buggered.

A lot of hand will fold this, but not 5/8 of them. I'd pick a better spot to bluff.