UTG - 29/20/12 (3bet) over 71 hands. FT3B 86%, 6/7. Had note that villain had 4bet JJ.

MP - 21/18/4 (3bet) reg over 300 hands. FT3B 81%. Couple of notes on villain, he had 3bet/call a 4bet OOP w/ QQ. Had seen villain 4bet twice, once w/ QQ and once w/ AA.

PokerStars - $0.10 NL (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4

CO: $23.80
BTN: $14.24
SB: $10.35
Hero (BB): $10.15
UTG: $6.34
MP: $12.14

SB posts SB $0.05, Hero posts BB $0.10

Pre Flop: (pot: $0.15) Hero has Q Q

UTG raises to $0.25, MP calls $0.25, fold, BTN calls $0.25, fold, Hero raises to $1.15, UTG calls $0.90, MP raises to $3.90, fold, Hero ???

What is going on here? Does MP really flat IP w/ KK+ here? IIRC, BU had a 3bet of 14% so maybe he was flatting hoping to trap him but caught me instead? I don't see the reg doing this w/ anything weaker than QQ, possibly AKs.

I have no idea what to do here.