raised pot, flopped TP+flush draw, facing raise on the turn

[insyder19]

Hmm, I really don't know what to do here, how often does he have 56 here? Slow playing a set?

What is the best play here? Just push or fold? Is calling really so bad?

Titan No-Limit Hold'em, $0.25/$0.50BB (Titan HH Converter by Kreatief)

CO ($48.05) (Hero)
Button ($50.90)
SB ($55.40)
BB ($43.25)
MP2 ($50.75)
MP3 ($68.15)

Preflop: Hero is CO with 7[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/heart.gif[/img]
<font color="#CC3333">MP2 raises to 2.0</font>, <font color="#666666">1 folds</font>, Hero calls $2.00, Button calls $2.00, <font color="#666666">2 folds</font>,

Flop: 7[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/heart.gif[/img], 2[img]/images/graemlins/heart.gif[/img] ( $6.75 )
MP2 checks, <font color="#CC3333">Hero bets $4.50</font>, Button calls $4.50, <font color="#666666">1 folds</font>,

Turn: 3[img]/images/graemlins/spade.gif[/img] ( $15.75 )
<font color="#CC3333">Hero bets $8.00</font>, <font color="#CC3333">Button raises to 18.0</font>, Hero calls $10.00,

River: 9[img]/images/graemlins/club.gif[/img] ( $51.75 )
Hero checks, <font color="#CC3333">Button raises All-In $26.4</font>, <font color="#666666">1 folds</font>,

Final Pot: $75.60