25NL - flopped set faces aggression on turn

[skoal2k4]

villian is 27/13 with agg. factors of 1.3/0.5/0.5 after 50 hands. My image is somewhat aggressive PF running 31/24 with agg. factor around 2 postflop

Full Tilt Poker - No Limit Hold'em Cash Game - $0.10/$0.25 Blinds - 6 Players - (LegoPoker Hand History Converter)

SB: $16.50
BB: $44.50
UTG: $26.50
skoal2k4 (MP): $37.50
CO: $3.80
BTN: $28.00

Preflop: skoal2k4 is dealt 4[img]/images/graemlins/diamond.gif[/img] 4[img]/images/graemlins/spade.gif[/img] (6 Players)
UTG folds, <font color="red">skoal2k4 raises to $0.85</font>, CO calls $0.85, BTN folds, SB calls $0.75, BB calls $0.60

Flop: ($3.40) 4[img]/images/graemlins/heart.gif[/img] J[img]/images/graemlins/diamond.gif[/img] Q[img]/images/graemlins/heart.gif[/img] (4 Players)
SB checks, BB checks, <font color="red">skoal2k4 bets $3.40</font>, 2 folds, BB calls $3.40

Turn: ($10.20) 8[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">BB bets $10.20</font>, skoal2k4 ??

he pretty much insta-bet pot on the turn. Given his low agg. numbers postflop (I know that the sample size is small), what do you make of villians action and how do I proceed?