Known players:
[tg]Position_Stack:hands/vp$ip/RaisePreflop/AF/WTS/ORL/BBvsSteal/W$SD;BB$3,20:36/56 /3 /4,3/5 /25 /0 /100 ;Hero$9,15:///////;[/tg]
0,05/0,1 No-Limit Hold'em (9 handed)
Hand recorder used for this poker hand: PokerStrategy Elephant 0.67 by www.pokerstrategy.com.
Preflop: Hero is CO with A♦, K♣
5 folds, Hero raises to $0,40, 2 folds, BB calls $0,30.
Flop: ($0,85) 7♠, J♦, A♥ (2 players)
BB checks, Hero bets $0,50, BB calls $0,50.
Turn: ($1,85) Q♦ (2 players)
BB checks, Hero checks.
River: ($1,85) 5♦ (2 players)
BB bets $0,50, Hero calls $0,50.
Final Pot: $2,85
Results follow (highlight to see):
Hero shows a pair of aces (Ad Kc)
BB shows two pairs, aces and jacks (As Js)
BB wins with two pairs, aces and jacks (As Js)
I am leaving the results here cause I think the cards on the showdown matter.
My reasoning for not raising the river was that I believed only a better hand would call my bet. Besides I had reads he is playing really tricky and slowplaying very strong hands.
Quitters never win, winners never quit! 
