JJ- under fire

[Bona]

Villain is 42/11/1.8 after 54 hands. He's been pretty aggressive post flop. A little loose preflop. Never too far out of line though.

PokerStars 0.25/0.50 Hold'em (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is MP with J[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/heart.gif[/img].
UTG calls, <font color="#CC3333">Hero raises</font>, <font color="#666666">3 folds</font>, <font color="#CC3333">UTG 3-bets</font>, <font color="#CC3333">Hero caps</font>, UTG calls.

Flop: (9.40 SB) 8[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">UTG raises</font>, Hero calls.

The pair doesn't worry me because I can't see him playing anything with an 8 in it that way preflop By now though, I'm thinking villain may well have JJ+ but he may also play 99-TT like this so I am planning to call down. Should I have treyed this flop? And if I had would his subsequent action have further defined his hand?

Turn: (6.70 BB) 4[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG bets</font>, Hero calls.

Now we can add a flush board and a straight board to the misery. But I think I have to call down since neither flush or straight seems very likely. Two big clubs maybe?? AKc or something?? Nah an overpair is still most likely and I really thought I was calling behind here. The problem with that is if I thought that I had to fold with only 2 outs right? Did I have to fold here or does the 99-TT possibility keep me in?

River: (8.70 BB) 6[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG bets</font>, Hero???

Now I'm in a quandry. Nice sized pot but is there any reasonable chance I win here? Or is this a righteous fold?