My Ex's Uncle, My Husband

Through a one-way mirror, I watched the passionate scene unfold between my fiancé and my best friend. I turned and impulsively married the stranger I bumped into in the hall. At the wedding, I publicly replaced the groom, turning that scumbag into the laughingstock of the city. It wasn't until he faced my new husband and stammered, "Uncle," that I realized... in this revenge plot, perhaps I wasn't the main character after all.