NL25 - JJ check raise vs aggro opponent

[reemas]

Full Tilt Poker, $0.10/$0.25 NL Hold'em Cash Game, 6 Players

CO: $24.85
Hero (BTN): $23.45
SB: $11.05
BB: $25.45
UTG: $26.05
MP: $6.35

Pre-Flop: J[img]/images/graemlins/spade.gif[/img] J[img]/images/graemlins/diamond.gif[/img] dealt to Hero (BTN)
<font color="red">UTG raises to $0.85</font>, 2 folds, <font color="red">Hero raises to $2.75</font>, 2 folds, UTG calls $1.90

Flop: ($5.85) 2[img]/images/graemlins/spade.gif[/img] 4[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/club.gif[/img] (2 Players)
UTG checks, <font color="red">Hero bets $4.15</font>, <font color="red">UTG raises to $13.25</font>, Hero ?

Not too many reads, but he does play aggressively.