6.50 - AK first hand

[Heavens_Myst]

Unknown villian. First hand. Thoughts?

AA/33/88/A8/A3 only hands that are beating me right now, and I don't see cold calling with 33, maybe 88, nor a8/a3. Do we put this guy on a flush draw? I hold the nut redraw to the flush. Am I going broke?

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (10 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Hero (t1500)
SB (t1500)
BB (t1500)
UTG (t1500)
UTG+1 (t1500)
UTG+2 (t1500)
MP1 (t1500)
MP2 (t1500)
MP3 (t1500)
CO (t1500)

Preflop: Hero is Button with K[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">3 folds</font>, MP1 calls t20, <font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises to t100</font>, <font color="#666666">1 fold</font>, BB calls t80, MP1 folds.

Flop: (t230) 8[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets t185</font>, <font color="#CC3333">BB raises to t370</font>, <font color="#CC3333">Hero ??