AJ check my river line

[ImprovinNewbie]

Im pretty sure Im ahead til the river. the only hands i see calling me down like this are sets, QJ and KJ. truthfully i lost my balls and didnt take him to value town on the river. i didnt think any worse hands would call. what do you guys do here? most times i bet TPTK 3 times I find out im beat. please help. by the way... AJ both sooooted and not is a loser for me.

Full Tilt Poker
No Limit Holdem Ring game
Blinds: $0.05/$0.10
6 players
Converter

Stack sizes:
UTG: $18.90
Hero: $15.65
CO: $9
Button: $2.35
SB: $9.30
BB: $13.60

Pre-flop: (6 players) Hero is UTG+1 with J[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/spade.gif[/img]
UTG folds, <font color="#cc0000">Hero raises to $0.35</font>, CO calls, Button folds, SB calls, BB folds.

Flop: 5[img]/images/graemlins/diamond.gif[/img] J[img]/images/graemlins/spade.gif[/img] 8[img]/images/graemlins/heart.gif[/img] ($1.15, 3 players)
SB checks, <font color="#cc0000">Hero bets $1.15</font>, CO folds, SB calls.

Turn: 5[img]/images/graemlins/heart.gif[/img] ($3.45, 2 players)
SB checks, <font color="#cc0000">Hero bets $3</font>, SB calls.

River: K[img]/images/graemlins/diamond.gif[/img] ($9.45, 2 players)
SB checks, Hero checks.

Results:
Final pot: $9.45