nl 100 cash - I 3 bet, ace drops on river

[IronFly]

villain and I have some history, he has def adjusted to my play. I've been 3 betting around 10% the whole time we've played. He caught me 3 betting with 66 when he flopped 2 pair in an earlier hand (I should have folded, duh).

No Limit Hold'em Cash Game - $0.50/$1 Blinds - 2 Players - (LegoPoker Hand History Converter)

Hero (BB): $131.30
SB: $175.90

Preflop: Hero is dealt Q[img]/images/graemlins/spade.gif[/img] 9[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">SB raises to $3.00</font>, <font color="red">Hero raises to $9.00</font>, SB calls $6.00

Flop: ($18) 4[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] T[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">Hero bets $15.00</font>, SB calls $15.00

Turn: ($48) 9[img]/images/graemlins/club.gif[/img] (2 Players)
Hero checks, SB checks

River: ($48) A[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">Hero bets $35.00</font>, <font color="red">SB raises all-in to $151.90</font>, Hero ????