15 Celebrity Couples That Began As Affairs

Jennifer Aniston and Justin Theroux

Seven years after divorcing Brad Pitt, Jennifer Aniston and Justin Theroux got engaged. But sources believe the timeline of their relationship is suspect.

Theroux had been dating his girlfriend of 14 years, Heidi Bivens, at the time he met Aniston. The consensus is that he ditched his former Wanderlust star for the favor of the Friends beauty.

Three years after announcing their engagement, Aniston and Theroux were married. The pair of stars have continued to experience great career success while together and appear to be maintaining a strong marriage at their one year anniversary mark.