At some point, Reagan married Judy.
In late 2012, Judy was found murdered in their home, having been stabbed to death. The Central City Police Department investigated the case and Reagan was their prime suspect. After detective Ralph Dibny (apparently) discovered his fingerprints on the murder weapon, Reagan was arrested for the crime. However, rookie CSI Barry Allen inspected the knife and realized that Ralph had planted evidence to frame Reagan, believing the latter to be responsible for Judy's death. Reagan's name was cleared while Ralph was dishonorably kicked off the police force for good.
It remains unknown whether Reagan really did murder Judy or was innocent.