was he bluffing or slow-playing?

[chopchoi]

Pokerroom Level 1

I'm BB w/ J9o. 3 limpers, SB completes, I check. Pot 100.

Flop is J [img]/images/graemlins/diamond.gif[/img] 5 [img]/images/graemlins/heart.gif[/img] 3 [img]/images/graemlins/diamond.gif[/img]. SB checks, I bet the pot, it folds arount to SB, who calls.

Turn: 7 [img]/images/graemlins/club.gif[/img]. I bet 200, SB calls.

River: T [img]/images/graemlins/heart.gif[/img]. SB pushes. I fold.

Does it look like he was bluffing, slow-playing, or did the river help him?