AQo - Can you fold this river?

[JoshuaD]

This is a 5/10 hand and I'm posting it here because this is a really close situation, I want to get advice from players that are stronger than me, and because it's a situation that applies across the limits. If you don't like it don't respond or report me to a mod. I don't think this is out of line.

Villian is a solid TAG by stats (24/19/2.2) over 331 hands. I don't have any other read.

Party Poker 5/10 Hold'em (6 max, 5 handed) FTR converter on zerodivide.cx

Preflop: Hero is MP with Q[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises</font>, <font color="#CC3333">Button 3-bets</font>, <font color="#666666">1 fold</font>, BB calls, Hero calls.

Flop: (9.40 SB) 2[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, Hero checks, <font color="#CC3333">Button bets</font>, BB calls, Hero calls.

Turn: (6.20 BB) A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, Hero checks, <font color="#CC3333">Button bets</font>, BB calls, <font color="#CC3333">Hero raises</font>, Button calls, BB folds.

River: (11.20 BB) J[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">Button raises</font>, Hero calls.

Final Pot: 15.20 BB

I had Brazilio look a buncha hands over for me, and this is what he said about this one:

[ QUOTE ]
You know what he has, but I never fold either. Capping preflop is a good option, not sure about that BB calling 2. ez cap HU

[/ QUOTE ]

Two questions:

1) I tend to see BB calling as a reason to cap, since I get a nice overlay. I haven't looked up this guys stats, but I'm assuming anyone who calls there like that is a donk, and has either got AA or is worse.

2) Can you find a fold on this river? I remember the hand vividly. The jack fell, I said "Don't have AJ" and bet. He raised, I called. Can't I fold here?