overpair facing raise

[b33nz]

villain was loose at ~23 vp$ip. i was lag, but was getting picked on. i couldnt flop something if my life depended on it and literally 90% of my cbets were picked off for the last half hour. so here i am with a real hand and getting raised. do i fold again for the 293857th time? if yes, then do u fold KK/AA here? if no, then whats the difference between JJ and AA here?

Full Tilt Poker
$2/$4 No Limit Hold'em Ring Game
5 Players
LegoPoker Hand Converter

<font color="black">Stack Sizes</font>
BTN: $872.80
Hero (SB): $512.4
BB: $928
UTG: $424.80
CO: $1361.20

<font color="black">Preflop:</font> J J ($6, 5 players)
UTG folds, CO calls $4, BTN folds, <font color="red">Hero raises to $20</font>, BB calls $16, CO calls $16

<font color="black">Flop:</font> 9[img]/images/graemlins/heart.gif[/img] T T[img]/images/graemlins/heart.gif[/img] ($60, 3 players)
<font color="red">Hero bets $45</font>, <font color="red">BB raises to $143</font>, CO folds, Hero