I know preflop is pretty bad. CO c-bets almost always. Was trying to lure him in (don't slow play at 25nl, kmind!...I know I know). Anyways, seems like SB had a set (no read on him though).

Poker Stars
No Limit Holdem Ring game
Blinds: $0.10/$0.25
6 players
Converter

Stack sizes:
Hero: $22.90
UTG+1: $22.20
CO: $25.10
Button: $24.65
SB: $40.70
BB: $28.10

Pre-flop: (6 players) Hero is UTG with 6 A
Hero calls, UTG+1 calls, CO raises to $1.5, Button folds, SB calls, BB calls, Hero calls, UTG+1 folds.

Flop: 3 6 A ($6.25, 4 players)
SB checks, BB checks, Hero checks, CO bets $5, SB raises to $10, BB folds, Hero folds, CO folds.
Uncalled bets: $5 returned to SB.

Results:
Final pot: $16.25