VILLIAN just stepped in not even a orbit ago and reading him borderline loose/semi-loose. He just won a big pot just prior with a PFR on a TT and seems paaive some what.

Full Tilt No-Limit Hold'em, $0.10 BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver Cards)

saw flop

BB ($19.20)
Hero ($10.90)
UTG+1 ($10.05)
MP1 ($9.55)
MP2 ($3.20)
MP3 ($7.55)
CO ($12)
Button ($9.65)
SB ($1.60)

Preflop: Hero is UTG with , .
Hero raises to $0.4, 7 folds, BB calls $0.30.

Flop: ($0.85) , , (2 players)
BB checks, Hero bets $0.5, BB calls $0.50.

Turn: ($1.85) (2 players)
BB checks, Hero bets $1.25, BB calls $1.25.

River: ($4.35) (2 players)
BB bets $4.1, Hero ????

What his line? Raise here n how much? or simply call to SD?