NL100 - Weird play by villain on turn

[LGeneral]

Villain had just joined the table, so I didnt have any read on him at all.

I just think he played the hand quite weird and I had no idea if my straight draw (weak flush draw) was worth anything.

Party Poker - No Limit Hold'em Cash Game - $0.50/$1 Blinds - 6 Players - (LegoPoker HH Converter)

SB: $92.50
BB: $148.16
UTG: $75.15
MP: $105.29
Hero (CO): $191.78
BTN: $28.00

Preflop: Hero is dealt Q[img]/images/graemlins/club.gif[/img] T[img]/images/graemlins/heart.gif[/img] (6 Players)
2 folds, <font color="red">Hero raises to $4.00</font>, BTN folds, SB calls $3.50, <font color="red">BB raises to $7.00</font>, Hero calls $3.00, SB calls $3.00

Flop: ($21) 9[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/heart.gif[/img] 3[img]/images/graemlins/heart.gif[/img] (3 Players)
SB checks, BB checks, <font color="red">Hero bets $15.00</font>, SB folds, BB calls $15.00

Turn: ($51) 9[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">BB bets $25.00</font>, Hero folds

Pot Size: $76.00