David says he has great chemistry with his fiancée, Brooke, and is excited to marry her in a month.

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But this will be the 53-year-old’s third marriage and Brooke is 29 years his junior – which, according to statistics, doesn’t bode well for a successful marriage.

WATCH: Man Says He’s ‘Caught In The Middle’ Of Daughter And Fiancée

“For third marriage, your chance of getting divorced is seven out of 10,” Dr. Phil tells the couple on Friday's episode. “If there’s a 10-year age gap 39 percent; a 20-year age gap, 95 percent; a 30-year age gap 172 percent likelihood of divorce.”

WATCH: 19-Year-Old Claims Dad’s 24-Year-Old Fiancée Is A ‘Scheming Gold Digger’

Will these and other statistics Dr. Phil presents to the couple make them reevaluate their decision to walk down the aisle? See their response in the video above.

This episode airs Friday. Watch more here.

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Reasons Why Many Huge Age Gap Marriages End in Divorce