NL 50(5 max)Overpair on paired\drawed flop

[shtirlis]

Texas Hold'em $0.25-$0.50 NL (real money)
Seat 1: dutchwagen ($57.30 in chips)
Seat 2: ropilus ($51.30 in chips)
Seat 3: Lurezz ($50.00 in chips)
Seat 5: DonateMePLZ ($50.00 in chips)
Seat 8: miauson ($51.35 in chips)
Seat 10: hero [ J [img]/images/graemlins/spade.gif[/img],J [img]/images/graemlins/heart.gif[/img] ] ($53.25 in chips)
ANTES/BLINDS
ropilus posts blind ($0.25), Lurezz posts blind ($0.50).

PRE-FLOP
DonateMePLZ folds, miauson calls $0.50, hero bets $2.50, dutchwagen folds, ropilus calls $2.25, Lurezz folds, miauson calls $2.

FLOP [board cards 6 [img]/images/graemlins/diamond.gif[/img],5 [img]/images/graemlins/diamond.gif[/img],5 [img]/images/graemlins/heart.gif[/img] ]
ropilus bets $5, miauson folds, hero bets $14, ropilus bets $43.80 and is all-in, hero ?
Villain loose\agressive donkey, but in this line i probably don't know what we must do. Easy fold ?