NL 50 AA confusing spot

[xeanatic]

Villian hasn't done anything like this before
My image on this table is aggressive

Villians stats are: 27/15/3

Really don't know what villian is doing this with.

Poker Stars - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 6 Players - (LegoPoker Hand History Converter)

SB: $35.30
BB: $50.00
UTG: $152.05
MP: $55.65
CO: $50.00
Hero (BTN): $122.25

Preflop: Hero is dealt A[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/heart.gif[/img] (6 Players)
UTG folds, MP calls $0.50, CO calls $0.50, <font color="red">Hero raises to $3.00</font>, 2 folds, MP calls $2.50, CO calls $2.50

Flop: ($9.75) T[img]/images/graemlins/spade.gif[/img] 9[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/spade.gif[/img] (3 Players)
<font color="red">MP bets all-in for $52.65</font>, Co folds Hero?