KK - facing turnraise

[zesi]

Party Poker No-Limit Hold'em, $0.25 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

CO (Villain) ($27.27)
Hero ($25.90)


Preflop: Hero is BB with K, K. Hero posts a blind of $0.25.
<font color="red">1 fold</font>, CO (Villain) calls $0.25, <font color="red">2 folds</font>, <font color="red">Hero (BB) raises to $1.2</font>, CO (Villain) calls $0.95.

Flop: ($2.50) Q, 5, 3 <font color="red">(3 players)</font>
<font color="red">Hero bets $2</font>, Villain calls $2.

Turn: ($6.50) 2 <font color="red">(3 players)</font>
<font color="red">Hero bets $5</font>, <font color="red">Villain raises to $15</font>, Hero raised to $25.65 (All-In), Villain calls $7.70.

River: ($59.85) 6 <font color="red">(3 players, 1 all-in)</font>

Final Pot: $59.85


Is this a fold? I guess baluga says so...

The opponent is unknown.. I couldnt really put him on a hand here, and I mostly just pushed because I didnt know what to do.. the result really surprised me then.. what do you think he has?