Pacific, $0.50/$1 No Limit Hold'em Cash, 6 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite.

SB: $147.01 (147 bb)Q AHero
BB: $100.72 (100.7 bb)
UTG: $91.60 (91.6 bb)
MP: $195.47 (195.5 bb)
CO: $271.42 (271.4 bb)
BTN: $101.10 (101.1 bb)

Preflop:
3 folds, BTN raises to $2.50, SB raises to $8.50, BB folds, BTN raises to $20.50, SB calls $12

Flop: ($42) K A 5 (2 players)
SB checks, BTN bets $15, SB calls $15

Turn: ($72) J (2 players)
SB checks, BTN bets $65.60 and is all-in, SB ?

Opponent: 22\18 4bet range OTB: 4%. I have problems with 4 bet pots, especially in similar situations. On the one hand we have TPTK + gutshot, but on the other hand, we don't beat any value of the opponent. And could someone bluffs here?