Does a worse hand call here?

[NLHE lahooozaher]

$50 Party Sat. night fun (6handed)...Opps loose and bad. Flop is pretty standard for me, when mofo bets the turn strongish I think he has the J, then the river bet confuzes me.

Party Poker No-Limit Hold'em, $ BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

UTG ($37.90)
Hero ($65.54)
CO ($49.45)
Button ($63.80)
SB ($14.50)
BB ($55.50)

Preflop: Hero is MP with A, A. SB posts a blind of $0.25.
UTG calls $0.50, Hero raises to $2.5, CO calls $2.50, 2 folds, BB calls $2, UTG folds.

Flop: ($8.25) J, J, 8 (3 players)
BB checks, Hero checks, CO bets $2, BB calls $2, Hero calls $2.

Turn: ($14.25) 6 (3 players)
BB checks, Hero checks, CO bets $5, BB folds, Hero calls $5.

River: ($24.25) 7 (2 players)
Hero checks, CO bets $5, Hero raises to $13

[WildBobAA]

Yuck, just call. How does the river bet confuse you? Looks like he's value betting a J

[NLHE lahooozaher]

Yuck, just call. How does the river bet confuse you? Looks like he's value betting a J

I dunno, just something about calling a 1/5 pot bet when I haven't shown any strength with my hand doesn't feel right.