NL50: AJ in position against pfr'er, flop top pair and he 3bets AI

[Artsemis]

PokerStars No-Limit Hold'em, $0.50 BB (8 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

CO ($53.05)
Button ($65.95)
SB ($48.45)
BB ($28.25)
UTG ($56.35)
UTG+1 ($55.85)
MP1 ($31.20)
Hero ($52.35)

Preflop: Hero is MP2 with J[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">MP1 raises to $2</font>, Hero calls $2, <font color="#666666">4 folds</font>.

Flop: ($4.75) 4[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP1 bets $3.5</font>, <font color="#CC3333">Hero raises to $9.5</font>, <font color="#CC3333">MP1 raises to $29.2</font>, Hero ??