And guess what?
It's because of her infidelity!
Snooping around on Téa's cell phone, the recently rehabbed X-Files star reportedly found titillating texts from Billy Bob Thorton - the man who once wore a vial of Angelina Jolie's blood around his neck. She had even been seen at a couple of his band's shows, helping Billy Bob load and unload his truck.
Now that's dedication!
Duchovny and Leoni have two kids together, 9-year-old daughter Madelaine West and 6-year-old son Kyd.
It was Téa who encouraged David to receive treatment for his sex addiction and then waited until he came home to make this new announcement.
So who's next?
After all, they say bad luck comes in threes.
[Image via WENN.]