Prima, $0.25/$0.50 No Limit Hold'em Cash, 6 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite.

SB: $83.93 (167.9 bb)
BB: $66.49 (133 bb)
UTG: $50 (100 bb)
Hero (MP): $149.99 (300 bb)
CO: $134.98 (270 bb)
BTN: $50 (100 bb)

Preflop: Hero is MP with 5h 5s
UTG folds, Hero raises to $1.50, CO calls $1.50, 2 folds, BB calls $1

Flop: ($4.75) 5d As 3c (3 players)
BB checks, Hero bets $3, CO raises to $8.50, BB folds, Hero raises to $21, CO calls $12.50

Turn: ($46.75) Th (2 players)
Hero bets $29.75, CO calls $29.75

River: ($106.25) 4c (2 players)
Hero bets $97.74 and is all-in, CO folds

Results: $106.25 pot ($1.50 rake)
Final Board: 5d As 3c Th 4c
Hero mucked 5h 5s and won $104.75 ($52.50 net)
CO mucked and lost (-$52.25 net)

I put him on A3 or 33 maybe A5 or wierd A10,he looks like reg, and i feel that he is going to check back that hands, but i didn,t sure is he going to call on my jam, my play screams aces, so i m wondering is it better to check river?