QJs BB vs BU raise SH ante

PokerStars - $0.02 Ante $0.01 NL (6 max) - Holdem - 4 players
Hand converted by PokerTracker 4

SB: 151 BB
Hero (BB): 119.5 BB
CO: 90 BB
BTN: 144.5 BB 38/15/3b0/af4/42h and Steal 22 (2/9)

SB posts SB 0.5 BB, Hero posts BB 1 BB, 4 players post ante of 0.5 BB

Pre Flop: (pot: 3.5 BB) Hero has J♥ Q♥

fold, BTN raises to 4 BB, SB calls 3.5 BB, Hero calls 3 BB

Flop: (14 BB, 3 players) T♠ 9♠ 8♣
SB checks, Hero checks, BTN bets 6.5 BB, fold, Hero raises to 17 BB, BTN calls 10.5 BB

Turn: (48 BB, 2 players) 6♠
Hero bets 30.5 BB, BTN calls 30.5 BB

River: (109 BB, 2 players) 7♦
Hero bets 67.5 BB and is all-in, BTN calls 67.5 BB

1. Turn - how often has he got suited hands (spades)? I was afraid that he may had K7s Q8s etc. He was winning player.