“Rob has been verbally abusive to me since we met 16 years ago,” claims Caitlin. “From very early on, Rob has called me a slut, a whore – anything to be nasty and mean.”

TELL DR. PHIL YOUR STORY: Life in crisis?

The mother of two also claims that Robert has been physical with her, pulling her by the hair and pinching her until she bruised.

“Rob has threatened to kill me many, many times,” Caitlin claims. “The last time Rob told me he was going to kill me was six days ago. He pushed me up against the wall and told me that he was going to put a pickaxe through my head.”

WATCH: Man Says Wife Antagonizes Him To ‘Get The Reactions Out Of Me’

Robert admits he has anger issues but says Caitlin is volatile and violent toward him.

Caitlin, who started dating Rob when she was 13, claims she’s terrified of him when he gets violent. “The thought of Rob killing me has crossed my mind,” she says.

WATCH: Husband Reads Profanity-Laced Texts He Sent To His Wife

In the video above, hear part of a conversation that Caitlin recorded of Robert telling her daughter, “I think the best thing that could happen is your mom passes away.” And on Monday’s episode of Dr. Phil, hear what Dr. Phil says the couple must do for them and their children. Check here to see where you can watch.

TELL DR. PHIL YOUR STORY: Marriage on the rocks?

Two Things Kids Say To Themselves When They Watch Their Parents Fight