Letters to an angel (crowley x aziraphale)

When an angel finds love letters to a mysterious stranger, he can't help but be entranced, but what happens when he realizes who wrote them?

A Study In Marriage (Johnlock) - Sequel to A Study in Love

Once the rings have been exchanged and the vows have been said, Sherlock and John are ready to settle down and get their fill of the domestic bliss that so often comes with marriage. Unfortunately, nothing is ever that simple for them... and they know the honeymoon period can't last forever. They'd promised each other...