flopped 75th nut flush facing resistance.. line?

[DaCooler]

new guy, no reads

Absolute Poker
No Limit Holdem Ring game
Blinds: $1/$2
5 players
Converter

Stack sizes:
UTG: $192
CO: $397
Button: $255.20
SB: $395
Hero: $428.55

Pre-flop: (5 players) Hero is BB with 3[img]/images/graemlins/heart.gif[/img] 2[img]/images/graemlins/heart.gif[/img]
UTG calls, CO folds, Button calls, SB folds, Hero checks.

Flop: 8[img]/images/graemlins/heart.gif[/img] T[img]/images/graemlins/heart.gif[/img] 4[img]/images/graemlins/heart.gif[/img] ($7, 3 players)
<font color="#cc0000">Hero bets $6</font>, <font color="#cc0000">UTG raises to $20</font>, Button folds, Hero calls.

Turn: 6[img]/images/graemlins/spade.gif[/img] ($47, 2 players)
Hero checks, <font color="#cc0000">UTG bets $23</font>, <font color="#cc0000">Hero raises to $75</font>, UTG calls.

River: T[img]/images/graemlins/spade.gif[/img] ($197, 2 players)