10/20 top pair vs limper

[Praetor]

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Played at iPoker network
6 players, seat 6 is the button

Seat 1: UTG ($1,940.00)
Seat 3: UTG+1 ($4,479.95)
Seat 5: CO ($2,418.00)
Seat 6: <font color="#C80000">Hero</font> ($2,057.00)
Seat 8: SB ($3,152.50)
Seat 10: BB ($2,037.50)



SB posts small blind, $10.00
BB posts big blind, $20.00

Dealing to <font color="#C80000">Hero</font>:
Q[img]/images/graemlins/spade.gif[/img],9[img]/images/graemlins/club.gif[/img]

UTG folds
UTG+1 folds
CO calls
<font color="#C80000">Hero</font> raises to $90
SB folds
BB folds
CO calls

Dealing flop: (Pot is $210.00)
3[img]/images/graemlins/diamond.gif[/img],9[img]/images/graemlins/spade.gif[/img],7[img]/images/graemlins/spade.gif[/img]

CO checks
<font color="#C80000">Hero</font> bets $175
CO raises to $455


Villain here is 25/10/2.23 over 1.5k hands. no real history between us. this seems like a standard fold I guess, but I find it really hard to see what he limps in the CO that isnt a draw now? will 25/10 really limp PP in the CO? Just let it go or take a card and get it in on good turn?