Villain is unknown.

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

SB: $16.75
BB: $16.20
Hero (UTG): $10.00
MP: $17.56
CO: $9.68
BTN: $22.70

SB posts SB $0.05, BB posts BB $0.10

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

Hero raises to $0.35, fold, fold, BTN calls $0.35, fold, fold

Flop: ($0.85, 2 players) A 5 5
Hero bets $0.60, BTN raises to $1.60, Hero calls $1.00

Turn: ($4.05, 2 players) J
Hero checks, BTN bets $2.60, Hero calls $2.60

River: ($9.25, 2 players) 8
Hero checks, BTN bets $6.60, Hero ???

I can't see what villain has that I beat, except maybe AT but that's doubtful.

Is anyone folding the turn here?