NL25: Flop nuts heads up, river makes second nuts.. fold ever?

[bknollenberg]

Villain is 21.2/16.7/1.4 after 156 hands. He raises anytime it folds around to him in the SB and I have been outplaying him on several flops with garb and made a few hands in this spot, hence the playing of the 10 8.

Do you ever fold here? Did I play it incorrectly? Thoughts?

Full Tilt Poker - No Limit Hold'em Cash Game - $0.10/$0.25 Blinds - 4 Players - (LegoPoker Hand History Converter)

Villain (SB): $50.20
Hero (BB): $56.95
UTG: $9.20
BTN: $23.65

Preflop: Hero is dealt (4 Players)
2 folds, <font color="red">Villain raises to $0.75</font>, Hero calls $0.50

Flop: ($1.50) (2 Players)
<font color="red">Villain bets $1.00</font>, <font color="red">Hero raises to $2.00</font>, Villain calls $1.00

Turn: ($5.50) (2 Players)
Villain checks, <font color="red">Hero bets $3.00</font>, Villain calls $3.00

River: ($11.50) (2 Players)
<font color="red">Villain bets $7.50</font>, Hero calls $7.50

Pot Size: $26.50 ($1.30 Rake)