Villain is tight passive. I haven't seen him show any aggression until now.

FTR Hand History Converter Output (intended for copying and pasting into poker forums!):
PokerStars No-Limit Hold'em, $0.10 BB (6 handed) from (Format: FlopTurnRiver)

Button ($7.55)
SB ($10.60)
BB ($11)
UTG ($7.90)
Hero ($14.60)
CO ($10.15)

Preflop: Hero is MP with 8, K.
1 fold, Hero raises to $0.4, 2 folds, SB calls $0.35, 1 fold.

Flop: ($0.90) J, 7, 3 (2 players)
SB checks, Hero checks.

Turn: ($0.90) Q (2 players)
SB bets $1, Hero calls $1.

River: ($2.90) J (2 players)
SB bets $1.8, Hero ???

Not sure what to say here as I'd probably have done the exact opposite of what you did on every street.

Bet the flop, raise the turn and as played call the river.