Aggressive Calling & Range Merging

[ICMoney]

<font color="blue">Reads: He was pretty aggro, running around 28/21. He CBs the flop 77% and CBs turn 55%. He folds to donks on flop 55%. </font>

Full Tilt Poker, $0.25/$0.50 NL Hold'em Cash Game, 6 Players
LegoPoker Hand History Converter

BB: $52.15
UTG: $69.60
MP: $49
CO: $48.50
BTN: $46.65
Hero (SB): $51

Pre-Flop: 7 7[img]/images/graemlins/heart.gif[/img] dealt to Hero (SB)
UTG folds, <font color="red">MP raises to $1.75</font>, CO folds, BTN calls $1.75, Hero calls $1.50, BB folds

Flop: ($5.75) 5 3 T[img]/images/graemlins/heart.gif[/img] (3 Players)
Hero checks, <font color="red">MP bets $4</font>, BTN folds, Hero calls $4
<font color="blue">I didn’t donk b/c he might fold but will probably CB this 100% of the time.
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Turn: ($13.75) 3[img]/images/graemlins/spade.gif[/img] (2 Players)
Hero checks, <font color="red">MP bets $9</font>, Hero calls $9
<font color="blue">Turn doesn't change anything. If I fold this turn, shouldn't I just fold on flop? His TCB is 55% and I still think I'm good.
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River: ($31.75) J[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">Hero bets $21</font>
[b] <font color="blue">He has just $34 left on river.

My bet is so weird on the river. I’m pretty much committed to call (??) if he pushes.
Does my hand look strong by CC, CC or is he snap calling with 99, AT, AJ, QQ, etc?

Should I fold turn, bet/push river, CC river or what?
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