Had it not been for this, and one other hand, I would have ended the evening by doubling up rather than being a little down. Was this just a little stupid/unlucky, or was I being really stupid? On the turn I knew I had it, but didn't want to scare him off. On the river, I'm thinking AK beats me... but there's no way he has it...

PokerStars No-Limit Hold'em, $0.02 BB (9 handed) converter

MP3 ($2.29)
CO ($3.61)
Button ($2.16)
SB ($6.70)
BB ($1.62)
UTG ($5.32)
Hero ($5.26)
MP1 ($6.34)
MP2 ($4.98)

Preflop: Hero is UTG+1 with Q, K.
1 fold, Hero raises to $0.09, 2 folds, MP3 calls $0.09, 4 folds.

Flop: ($0.21) 5, J, 9 (2 players)
Hero checks, MP3 checks.

Turn: ($0.21) T (2 players)
Hero checks, MP3 checks.

River: ($0.21) Q (2 players)
Hero bets $0.05, MP3 raises to $0.2, Hero raises to $0.35, MP3 raises to $2.2, Hero calls $1.85.

Final Pot: $4.61

Results in white below:
Hero has Qc Kc (straight, king high).
MP3 has Ac Kh (straight, ace high).
Outcome: MP3 wins $4.61.