Weak fold to a river bet?

[Jasonxc]

Given my preflop raise and then turn bet I thought I had pretty much defined my hand. With his lead out and a man to act behind me I didnt think I could call. This was 25$ table though.(2nd orbit at the table)

Pokerroom 25$ table 10 handed.
Seat 1: Jim Bobb ($13 in chips)
Seat 2: sitting_duck ($15 in chips)
Seat 4: mindreader44 ($13.60 in chips)
Seat 5: toadfan ($32.05 in chips)
Seat 6: Hero [KC,AH] ($24.60 in chips)
Seat 7: gflow5993 ($26.60 in chips)
Seat 8: johndeer32 ($17.10 in chips)
Seat 9: travise ($11 in chips)
Seat 10: kingspade88 ($29.10 in chips)



ANTES/BLINDS
kingspade88 posts blind ($0.15), Jim Bobb posts blind ($0.25).

PRE-FLOP
sitting_duck folds, mindreader44 calls $0.25, toadfan calls $0.25, Brn1 bets $1.50, gflow5993 calls $1.50, johndeer32 folds, travise folds, kingspade88 folds, Jim Bobb calls $1.25, mindreader44 calls $1.25, toadfan folds.

FLOP [board cards 8S,10C,7S ]
Jim Bobb checks, mindreader44 checks, Hero checks, gflow5993 checks.

TURN [board cards 8S,10C,7S,AD ]
Jim Bobb checks, mindreader44 checks, Hero bets $3, gflow5993 calls $3, Jim Bobb calls $3, mindreader44 folds.

RIVER [board cards 8S,10C,7S,AD,JD ]
Jim Bobb bets $8.50 and is all-in, Hero folds, gflow5993 folds.

SHOWDOWN
Jim Bobb wins $23.15.