Top pair facing turn donkbet

[Scaramouche]

Villain is 70/9/0.8/100h . I think his AF is low because he calls way too much, but he's not that passive. He loves to bet big and he instant call my flop bet.

For instance this is a hand that we played before

Converted at KJpoker.com
Comments and ratings can be found there.

Played at iPoker network
6 players, seat 10 is the button

Seat 6: UTG+1 ($101.35)
Seat 5: UTG ($197.00)
Seat 3: BB ($15.20)
Seat 1: SB ($175.05)
Seat 8: CO ($179.00)
Seat 10: <font color="#C80000">Hero</font> ($536.95)

SB posts small blind, $1.00; BB posts big blind, $2.00;

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

UTG raises to $6; UTG+1 calls; CO folds; <font color="#C80000">Hero</font> raises to $27; SB folds; BB folds; UTG calls; UTG+1 calls;

Dealing flop: (Pot is $84.00)
7[img]/images/graemlins/spade.gif[/img],8[img]/images/graemlins/club.gif[/img],3[img]/images/graemlins/heart.gif[/img];
UTG checks; UTG+1 is all-in $74.35; <font color="#C80000">Hero</font> calls; UTG folds;

Dealing turn: (Pot is $232.70)
6[img]/images/graemlins/heart.gif[/img];


Dealing river: (Pot is $232.70)
J[img]/images/graemlins/diamond.gif[/img];


Showdown: (Pot is $232.70)
UTG+1 has
K[img]/images/graemlins/spade.gif[/img],6[img]/images/graemlins/diamond.gif[/img]

<font color="#C80000">Hero</font> has
A[img]/images/graemlins/club.gif[/img],A[img]/images/graemlins/spade.gif[/img]

<font color="#C80000">Hero</font> wins $229.7


And the hand in question

Seat 1: BTN ($219.75)
Seat 3: SB ($204.30)
Seat 5: BB ($192.00)
Seat 6: UTG ($167.74)
Seat 8: UTG+1 ($172.00)
Seat 10: <font color="#C80000">Hero</font> ($653.05)

SB posts small blind, $1.00; BB posts big blind, $2.00;

Dealing to <font color="#C80000">Hero</font>:
J[img]/images/graemlins/heart.gif[/img],A[img]/images/graemlins/spade.gif[/img]

UTG calls; UTG+1 folds; <font color="#C80000">Hero</font> raises to $9; BTN folds; SB folds; BB folds; UTG calls;

Dealing flop: (Pot is $21.00)
3[img]/images/graemlins/diamond.gif[/img],A[img]/images/graemlins/club.gif[/img],6[img]/images/graemlins/club.gif[/img];
UTG checks; <font color="#C80000">Hero</font> bets $17; UTG calls;

Dealing turn: (Pot is $55.00)
K[img]/images/graemlins/heart.gif[/img];
UTG bets $52; <font color="#C80000">Hero</font> ??

[Unknown Soldier]

call/call