NL100: KK deep vs donk

[ADK]

66/30/2.3. Never seen him 4-bet till now.

We were playing really aggro vs each other at the start of the session (was 3 handed), then he started to stay out of my way

Prima Network No-Limit Hold'em, $1.00 BB (6 handed) Hand History converter Courtesy of PokerZion.com

UTG ($95.55)
MP ($189.63)
CO ($190.62)
Hero ($310.70)
SB ($1.59)
BB ($69.63)

Preflop: Hero is Button with K[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">MP raises to $4</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $12</font>, SB calls $1.59 (All-In), <font color="#666666">1 fold</font>, <font color="#CC3333">MP raises to $36</font>, Hero calls $24.

Flop: ($75.09) 9[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players, 1 all-in)</font>
<font color="#CC3333">MP bets $75.09</font>, <font color="#CC3333">Hero does...?</font>


I just [censored] know he has AA here after re-raises me again preflop, I really really want to fold flop but I know alot of people will say to never fold in this spot vs this player..........

comments?

(p.s i thought his stack was deeper than this but anyway..)