50NL - AA facing all in on flop

[Willem]

Villain is a 19/14/2.5 and is a multi-tabling reg who just moved up from 25nl.

A few orbits before this hand I 3-bet villain's buttonraise from the blinds, he called my c-bet and bet the turn there, so either he had a hand there, or he isn't giving my 3-bets respect. I'm not too sure this matters for this hand at all btw.

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Hero ($50.25)
BB ($49.50)
UTG ($68.90)
MP ($57.80)
CO ($51.50)
Button ($108.20)

Preflop: Hero is SB with A[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
<font color="#CC3333">UTG raises to $2</font>, <font color="#666666">2 folds</font>, Button calls $2, <font color="#CC3333">Hero raises to $8</font>, <font color="#666666">1 fold</font>, UTG folds, Button calls $6.

Flop: ($18.50) J[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $14</font>, <font color="#CC3333">Button raises to $100.2</font>, Hero ...?

So, what do you do here? It seems weird to me that he would have a set because he wouldn't have had set-odds pf, but who knows.