.50/1 AA - villain turn/river donk?

[Darth Poker]

first orbit at table, but villain has limped/called raises on every hand. he also has called most hands down to at least the turn. I have not seen him raise at all, pre- or post-flop. seems pretty loosey-goosey.
should I find a fold anywhere?
raise the river?
was calling down after my turn raise/his river donk the right line?

Party Poker 0.50/1 Hold'em (10 handed) FTR converter on zerodivide.cx

Preflop: Hero is CO with A[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/spade.gif[/img].
UTG calls, UTG+1 calls, UTG+2 calls, <font color="#666666">1 fold</font>, MP2 calls, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">3 folds</font>, UTG calls, UTG+1 calls, UTG+2 calls, MP2 calls.

Flop: (11.50 SB) 6[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/diamond.gif[/img], 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(5 players)</font>
UTG checks, UTG+1 checks, UTG+2 checks, MP2 checks, <font color="#CC3333">Hero bets</font>, UTG calls, UTG+1 calls, UTG+2 folds, MP2 folds.

Turn: (7.25 BB) K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
UTG checks, <font color="#CC3333">UTG+1 bets</font>, <font color="#CC3333">Hero raises</font>, UTG folds, UTG+1 calls.

River: (11.25 BB) 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG+1 bets</font>, Hero ???

[CaucasianAsian29]

No, don't fold anywhere, check and then call on river.

[Niediam]

Call the river. The rest of the hand is good.

[jakbse]

If villian is a thinking player, which he doesn't seem to be.. he may have put you on a semi-bluff on the turn and bets into you on the non heart river. In that case you can raise here.
More likely though is that he limped with something like A6s, and now made trips. But there is far from enough evidence that this is the case, you have to call here.

[BigBadBabar]

call the river

you don't want to find folds at .5/1 really

[testaaja]

Without more reads I call this every time. With reads I'd be willing to raise / fold.

[numeri]

Just call the river. You don't want to fold, and getting 3-bet would suck. Calling will also give you a nice read on what he donks the river with.

EDIT: Edited to say that this is very often a bluff HU.