100 6max TP versus WTF action

[HerbieGRD]

I have folded to a river overbet push from villain before - I bet turn because it looked like a flush draw and I didn't want to give him a free card- is the river call easy/hard? I think I screwed this up pretty bad....

PokerStars No-Limit Hold'em, $1.00 BB (5 handed) internettexasholdem.com

SB ($240.80)
BB :#A500AF(Villain)/ ($89.25)
UTG ($92.50)
MP ($201.15)
Hero ($102.80)

Preflop: Hero is Button with A[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/spade.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $3</font>, <font color="#666666">1 fold</font>, BB :#A500AF(Villain)/ calls $2.

Flop: ($6.50) 5[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Villain checks, <font color="#CC3333">Hero bets $5</font>, <font color="#CC3333">Villain raises to $10</font>, Hero calls $5.

Turn: ($26.50) 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Villain checks, <font color="#CC3333">Hero bets $20</font>, Villain calls $20.

River: ($66.50) 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Villain bets $56.25 (All-In)</font>, Hero???

Final Pot: $122.75