AA facing heat

Reads: Villian has been making some moves on my continuation bets, since I've had an irritating string of missed unpaired paint that I've had to fold to resistence, so it probably looks like I can be moved off a hand. However, at the same time, villian has also shown down some decent hands, but we (aside from the folds above) haven't really tangled, so a more precise reading is lacking. Thoughts?


PokerStars No-Limit Hold'em, $0.50 BB (5 handed) converter

saw flop|<font color="#C00000">saw showdown</font>

SB ($48.45)
Hero ($67.95)
UTG ($99.05)
MP ($29.15)
Button ($50)

Preflop: Hero is BB with A[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/club.gif[/img].
UTG calls $0.50, <font color="#666666">2 folds</font>, SB completes, <font color="#CC3333">Hero raises to $2.5</font>, UTG calls $2, SB folds.

Flop: ($5.50) Q[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $5</font>, <font color="#CC3333">UTG raises to $10</font>, Hero calls $5.

Turn: ($25.50) J[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">UTG bets $15.5</font>, Hero calls $15.50.

River: ($56.50) 2[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">UTG bets $20</font>, <font color="#CC3333">Hero ???</font>