Easy River Fold Versus Loose Guy?

[toss]

6-Max Table at Party

Folded to SB(51.2/4.76 after 84 hands) who completes. I check with offsuite 96.

Flop is A9T all clubs. SB checks so I bet, he checkraises me. Its not too likely to be a flush. I would think he'd try to slowplay till the turn with that one. It may be though. Other possible hands may be an Ace altough I'd think he'd just bet it out. What seems most likely to me is a lower pair or pocket pair with a one card flush draw. So I call his checkraise.

Turn is the 6 of hearts giving me two pair. SB bets again and I just call. This is probably a sizeable error. At the time I thought I would let him keep on betting if he was bluffing. Theres a couple of problems with that idea though.

River is the 8 of clubs putting 4 of them on board. He bets and I fold with 5.8 Big Bets in the pot. Anyone see any value in calling the river?