25NL AA...9JX flop...Do I fold here?

[fursza01]

Villian is 45/13 over 42 hands and doesnt seem like too strong of a player in the hands he has played. BTN yet to act is 35/15 and a strong player over 150 hands but do I need to be that concerned with him?
I put BB on AJ at best and dont see him holding 9J here.
Any thoughts?

Poker Stars, $0.10/$0.25 NL Hold'em Cash Game, 6 Players
LegoPoker Hand History Converter

Hero (MP): $27.35
CO: $27.85
BTN: $67.25
SB: $28.40
BB: $24.75
UTG: $5.50

Pre-Flop: A[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/heart.gif[/img] dealt to Hero (MP)
UTG folds, <font color="red">Hero raises to $1</font>, CO folds, BTN calls $1, SB folds, BB calls $0.75

Flop: ($3.10) 9[img]/images/graemlins/diamond.gif[/img] 3[img]/images/graemlins/diamond.gif[/img] J[img]/images/graemlins/spade.gif[/img] (3 Players)
BB checks, <font color="red">Hero bets $2.25</font>, BTN calls $2.25, <font color="red">BB raises to $20.50</font>, <font color="red">Hero ?</font>