Nl400 Missed FD but middlepair vs LAG

[chef]

Villain is playing like 43/24/4, Blockbet river?

Prima Poker skin
No Limit Holdem Ring game
Blinds: $2/$4
5 players
Converter

Stack sizes:
UTG: $403.40
Hero: $388.00
Button: $582.70
SB: $556.00
BB: $593.40

Pre-flop: (5 players) Hero is CO with Q[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/spade.gif[/img]
UTG folds, <font color="#cc0000">Hero raises to $16</font>, Button calls, 2 folds.

Flop: 4[img]/images/graemlins/spade.gif[/img] 8[img]/images/graemlins/spade.gif[/img] 5[img]/images/graemlins/diamond.gif[/img] ($38, 2 players)
<font color="#cc0000">Hero bets $26</font>, Button calls.

Turn: A[img]/images/graemlins/club.gif[/img] ($90, 2 players)
<font color="#cc0000">Hero bets $64</font>, Button calls.

River: K[img]/images/graemlins/diamond.gif[/img] ($218, 2 players)
Hero checks, <font color="#cc0000">Button bets $109</font>, Hero calls.

Results:
Final pot: $436