AA, loose semi-aggressive opponent, what to do on the River?

[jediael]

The following hand was not played by me, but I had an argument with a friend about it and would like to receive some feedback.

Villain is 77 / 13.6 / 1.06 and is particularly passive on the flop aggression

Party Poker 20.00/40.00 Hold'em <font color="#0000FF">(6 handed)</font> link

Preflop: Hero is SB with A[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img].
UTG calls, <font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises</font>, BB calls, UTG calls.

Flop: (6.00 SB) T[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, BB folds, UTG calls.

Turn: (4.00 BB) 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">UTG raises</font>, Hero calls.

River: (8.00 BB) 2[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero ??

1) Would you 3-bet the turn or just call his raise? How close together in value are these two options?

2) Do you bet the river? If yes, how clear a bet is it? Which river cards would discourage you from betting?