NL25 - Flop Middle pair vs a TAG

[tedmondh]

Poker Stars - No Limit Hold'em Cash Game - $0.10/$0.25 Blinds - 6 Players - (LegoPoker HH Converter)

SB: $38.85
BB: $7.85
UTG: $25.20
MP: $32.90
CO: $3.60
Hero (BTN): $28.05

Preflop: Hero is dealt J[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/diamond.gif[/img] (6 Players)
UTG folds, <font color="red">MP raises to $1.00</font>, CO calls $1.00, Hero calls $1.00, SB folds, BB calls $0.75

Flop: ($4.10) J[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/diamond.gif[/img] 3[img]/images/graemlins/heart.gif[/img] (4 Players)
BB checks, <font color="red">MP bets $3.00</font>, CO folds, Hero calls $3.00, BB folds

Turn: ($10.10) 9[img]/images/graemlins/heart.gif[/img] (2 Players)
MP checks, Hero checks

River: ($10.10) 2[img]/images/graemlins/diamond.gif[/img] (2 Players)
<font color="red">MP bets $5.00</font>

Villian is a standard TAG player. Hasn't gotten out of hand.. Is it right to call the cbet on the flop? After he checks the turn, what do we think of the river bet by him? Could he have checked the turn with a flush?