If i checked the flop, and raised later, I think he would've folded his jacks. Does the other guy have AA or QQ?

PokerStars No-Limit Hold'em, $0.02 BB (9 handed) from (Format: FlopTurnRiver)

UTG ($1.88)
Hero ($6.63)
MP1 ($4.62)
MP2 ($1.05)
MP3 ($5.32)
CO ($1.86)
Button ($1.12)
SB ($3.25)
BB ($1.58)

Preflop: Hero is UTG+1 with A, K. MP1 posts a blind of $0.03.
UTG calls $0.02, Hero raises to $0.12, MP1 (poster) raises to $0.22, 5 folds, BB calls $0.20, UTG folds, Hero calls $0.10.

Flop: ($0.70) K, K, 2 (3 players)
BB checks, Hero bets $0.2, MP1 calls $0.20, BB calls $0.20.

Turn: ($1.30) 5 (3 players)
BB checks, Hero bets $0.7, MP1 folds, BB calls $0.70.

River: ($2.70) 6 (2 players)
BB checks, Hero bets $0.46, BB calls $0.46 (All-In).

Final Pot: $3.62

Results in white below:
BB has Jh Js (two pair, kings and jacks).
Hero has As Kc (three of a kind, kings).
Outcome: Hero wins $3.62.

Who was the one slowplaying?

Nonon, Im saying if I did slow play it, JJ woudl've folded somewhere along the way