NL25 flopped flush against higher flush?

[WarhammerIIC]

Villain is 26/2.5/1 over 38 hands. I don't really know any other hand he could possibly take this line with.



Full Tilt Poker - No Limit Hold'em Cash Game - $0.10/$0.25 Blinds - 9 Players - (LegoPoker HH Converter)

SB: $12.25
BB: $23.60
UTG: $7.75
UTG+1: $9.75
MP1: $5.80
MP2: $7.55
Hero (MP3): $26.95
CO: $35.35
BTN: $26.20

Preflop: Hero is dealt 7[img]/images/graemlins/club.gif[/img] 8[img]/images/graemlins/club.gif[/img] (9 Players)
2 folds, MP1 calls $0.25, MP2 folds, Hero calls $0.25, CO calls $0.25, BTN calls $0.25, SB calls $0.15, BB checks

Flop: ($1.50) Q[img]/images/graemlins/club.gif[/img] 4[img]/images/graemlins/club.gif[/img] 2[img]/images/graemlins/club.gif[/img] (6 Players)
SB checks, BB checks, MP1 checks, <font color="red">Hero bets $1.50</font>, CO calls $1.50, 4 folds

Turn: ($4.50) 3[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">Hero bets $3.50</font>, <font color="red">CO raises to $8.00</font>, Hero ??