BTN: $2.16
SB: $1.35 Hands: 2)
BB: $5.12
Hero (UTG): $2.24
MP: $8.87 (Hands: 4)
CO: $3.31 (Hands: 4)

SB posts SB $0.01, BB posts BB $0.02

Pre Flop:(pot: $0.03 Hero has  J:club: J:heart:

Hero raises to $0.06, fold, CO calls $0.06, fold, fold, fold

Flop: ($0.15, 2 players)  K:spade: 5:diamond: 8:heart:
Hero bets $0.09, CO raises to $0.20, Hero calls $0.11

Turn: ($0.55, 2 players)  3:diamond:
Hero checks, CO checks

River: ($0.55, 2 players)  6:heart:
Hero checks, CO bets $0.35, Hero calls $0.35

It seems like I keep running into this spot on the river. Have I induced a bluff? Or did villain river 2 pair or better?

[spoil]CO shows  6:spade: 6:diamond:  (Three of a Kind, Sixes) (Pre 20%, Flop 12%, Turn 5%)
Hero mucks  J:club: J:heart:  (One Pair, Jacks) (Pre 80%, Flop 88%, Turn 95%)
CO wins $1.21
[/spoil]

PS. sorry about formatting