What's my line? (second nuts)

[mulebennett]

**NOT A BAD BEAT POST, I PROMISE** No real reads on villain. Only around 10 hands in, does his 3-bet show enough strength to possibly lay this down?

Party Poker No-Limit Hold'em, $ Hero (9 handed) FTR converter on zerodivide.cx

SB ($50.50)
Hero ($103.85)
UTG ($100)
UTG+1 ($101.75)
MP1 ($313.35)
MP2 ($90.85)
MP3 (Villain)/ ($145.80)
CO ($17.45)
Button ($24.35)

Preflop: Hero is BB with 4[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $0.50.
<font color="#666666">2 folds</font>, MP1 calls $1, <font color="#666666">1 fold</font>, MP3 (Villain)/ calls $1, <font color="#666666">3 folds</font>, Hero checks.

Flop: ($3.50) K[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, MP1 checks, Villain checks.

Turn: ($3.50) 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, <font color="#CC3333">MP1 bets $3.35</font>, Villain calls $3.35, Hero calls $3.35.

River: ($13.55) 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, MP1 checks, <font color="#CC3333">Villain bets $6</font>, <font color="#CC3333">Hero raises to $20</font>, MP1 folds, <font color="#CC3333">Villain raises to $45</font>, Hero calls $25.

Results in white below:
<font color="white">Final Pot: $103.55
Villain shows [ Ah, 3d ] a flush, ace high.
Hero doesn't show [ 4s, Jh ] a flush, king high.
Villain wins $100.55 from the main pot with a flush, ace high with ace kicker. </font>