AA scary river ($100 6-max)

[snappo]

villain is very loose and very aggressive preflop (80/25) and medium aggressive postflop.

is a blocking bet a better idea on this river? i felt like i wasn't ahead of anything and a blocking bet would just be losing more money than necessary. check and call his bet? my river play just feels so weak-tight.

Party Poker No-Limit Hold'em, $ Hero (6 max, 4 handed) converter

Hero ($101)
UTG ($177.49)
Button ($140.30)
SB ($71.48)

Preflop: Hero is BB with A[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/club.gif[/img]. SB posts a blind of $0.50.
<font color="#666666">1 fold</font>, Button calls $1, SB (poster) completes, <font color="#CC3333">Hero raises to $3</font>, Button calls $3, SB folds.

Flop: ($9) 9[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $8</font>, Button calls $8.

Turn: ($25) J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $25</font>, Button calls $25.

River: ($75) 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets $40</font>, Hero folds.

Final Pot: $115