NL$1k, calling for a split on the river

[wtfsvi]

Villain is 35/16/3.4. More aggro on the flop than on the other streets. I've reraised him every time he has opened the last few orbits. Last time he typed "having fun?" in the chatbox before he folded. Very next hand:

Party Poker No-Limit Hold'em, $ BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

saw flop|<font color="#C00000">saw showdown</font>

SB ($2290.16)
BB ($1177.50)
UTG ($1899.30)
MP (villain) ($1197)
Hero ($2001.12)
Button ($1000)

Preflop: Hero is CO with K[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/diamond.gif[/img]. SB posts a blind of $5.
<font color="#666666">1 fold</font>, <font color="#CC3333">MP(villain) raises to $30</font>, <font color="#CC3333">Hero raises to $100</font>, <font color="#666666">3 folds</font>, MP :#A500AF(villain)/ calls $70.

Flop: ($215) 6[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
villain checks, <font color="#CC3333">Hero bets $150</font>, villain calls $150.

Turn: ($515) 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
villain checks, <font color="#CC3333">Hero bets $250</font>, villain calls $250.

River: ($1015) 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">villain instapushes for $697</font>, Hero..?

Final Pot: $1712

edit: On party, if it makes a difference. And comments on other streets are welcome too.