100 NLH 6max: river bluff against possible pair Aces

[Tessai]

i had a unusually tight image over 80 hands and thought that i could use it in this situation. I gave him a pair of aces...

villian 27/15/5.13 over 226 hands (VP$IP/PFRAISE/AF)




Prima Poker skin
No Limit Holdem Ring game
Blinds: $0.50/$1
6 players
Converter

Stack sizes:
UTG: $88.95
UTG+1: $172.70
CO: $156.70
Button: $58.50
SB: $308.85
Hero: $66.60

Pre-flop: (6 players) Hero is BB with J[img]/images/graemlins/spade.gif[/img] T[img]/images/graemlins/spade.gif[/img]
UTG folds, <font color="#cc0000">UTG+1 raises to $4</font>, 3 folds, Hero calls.

Flop: A[img]/images/graemlins/heart.gif[/img] T[img]/images/graemlins/heart.gif[/img] 9[img]/images/graemlins/spade.gif[/img] ($8.5, 2 players)
Hero checks, <font color="#cc0000">UTG+1 bets $7</font>, Hero calls.

Turn: 8[img]/images/graemlins/spade.gif[/img] ($22.5, 2 players)
Hero checks, <font color="#cc0000">UTG+1 bets $13</font>, Hero calls.

River: 3[img]/images/graemlins/club.gif[/img] ($48.5, 2 players)
<font color="#cc0000">Hero is all-in $43.6</font>.....

what about my bluff? [img]/images/graemlins/grin.gif[/img]