I've kinda just sat down, no read on this guy. But after a his 4bet,etc I had the thought of his range he's raising with is AA - but how do I actually convince myself to fold KK preflop? I felt bad as I "knew" he had AA, but the point I'm felling dissapointed is that even I knew, I could not fold KK

PokerStars No-Limit Hold'em, $0.05 BB (9 handed) -

Button ($2.49)
SB ($6.58)
BB ($4.83)
Hero (UTG) ($4.47)
UTG+1 ($14.56)
MP1 ($1.07)
MP2 ($2.13)
MP3 ($8.51)
CO ($4)

Preflop: Hero is UTG with K, K
Hero bets $0.20, 3 folds, MP3 raises to $0.40, 4 folds, Hero raises to $0.80, MP3 raises to $2, Hero calls $1.20

Flop: ($4.07) J, 10, 6 (2 players)
Hero checks, MP3 bets $1, Hero raises to $2.47 (All-In), MP3 calls $1.47

Turn: ($9.01) 6 (2 players, 1 all-in)

River: ($9.01) J (2 players, 1 all-in)

Total pot: $9.01 | Rake: $0.44

Results:
Hero had K, K (two pair, Kings and Jacks).
MP3 had A, A (two pair, Aces and Jacks).
Outcome: MP3 won $8.57