5nl JJ overpair, too aggressive?

[sivadom]

CO is 54/8/1 over a small sample. Too aggressive vs a relatively passive player?

Poker Stars, $0.02/$0.05 NL Hold'em Cash Game, 5 Players
LeggoPoker.com (http://www.leggopoker.com) - Hand History Converter (http://www.leggopoker.com/hh)

SB: $7.82
BB: $9.28
UTG: $7.44
CO: $12.01
Hero (BTN): $6.08

Pre-Flop: J/images/graemlins/spade.gif J/images/graemlins/heart.gif dealt to Hero (BTN)
UTG folds, CO calls $0.05, <font color="red">Hero raises to $0.25</font>, SB calls $0.23, BB folds, CO calls $0.20

Flop: ($0.80) 6/images/graemlins/heart.gif 4/images/graemlins/club.gif 8/images/graemlins/heart.gif (3 Players)
<font color="red">SB bets $0.07</font>, <font color="red">CO raises to
$0.14</font>, <font color="red">Hero raises to $1.10</font>, SB folds, CO calls $0.96

Turn: ($3.07) K/images/graemlins/spade.gif (2 Players)
<font color="red">CO bets $1.66</font>, <font color="red">Hero raises to $4.73 and is All-In</font>

[Milky]

I think your flop line is fine but CO is just screaming "big hand" so I'd fold turn.