OK so what burns me a lot is people who limp KK Villan had been quite passive, bet pretty small on some big hands, was my turn play a bit aggro, I expected to take it down or maby get paid by the single pair. Was there any way to get away from it?

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) FTR converter on zerodivide.cx

BB ($35.25)
UTG ($33)
Hero ($105.90)
CO ($17.25)
Button ($19.40)
SB ($71.95)

Preflop: Hero is MP with 7, A.
UTG raises to $1, Hero calls $1, CO calls $1, Button calls $1, 1 fold, BB calls $0.50.

Flop: ($5.25) K, 7, A (5 players)
BB checks, UTG bets $2, Hero raises to $8.5, CO folds, Button folds, BB folds, UTG calls $6.50.

Turn: ($22.25) 9 (2 players)
UTG checks, Hero bets $32, UTG calls $23.50 (All-In).

River: ($77.75) 5 (2 players, 1 all-in)

Final Pot: $77.75

Results in white below:
UTG has Ks Kd (three of a kind, kings).
Hero has 7s Ac (two pair, aces and sevens).
Outcome: UTG wins $69.25. Hero wins $8.50.