[$50 NL] AK hits flop, raised all in on river, ever two pair?

[CyberMuppet]

Just sat down, took another guys stack with a flush after a couple of hands. No direct reads on villain except that he overbets the pot on a number of occasions, never showed down a hand though.

As played, call river or am I always beat here? Thoughts on other streets?


Party Poker No-Limit Hold'em, $0.5 BB (4 handed) Party Poker Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Button ($145.61)
SB ($33.27)
BB ($51.28)
Hero ($156.02)

Preflop: Hero is UTG with A[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/heart.gif[/img].
<font color="#CC3333">Hero raises to $2</font>, Button calls $2, SB calls $1.75, BB calls $1.50.

Flop: ($8) 7[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, BB checks, <font color="#CC3333">Hero bets $8</font>, Button calls $8, SB folds, BB folds.

Turn: ($24) 3[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $20</font>, Button calls $20.


River: ($64) 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $36.25</font>, Button raises $115.61 (All-In), Hero ???