Khloé Kardashian grilled her mother's boyfriend about marriage.

The 'Keeping Up With The Kardashians' beauty and her best friend Malika Haqq sat down with Kris Jenner's boyfriend Corey Gamble to discuss his intentions and when questioned about marriage, he insisted it was only a ''piece of paper''.

He said: ''I don't think love is measured by that piece of paper because I know people that are not married that are strong as hell.''

Then when Khloé asked him if he wanted children, he responded: ''I've raised some kids in my time.''

The pair also interrogated Corey, who is 25 years younger than Kris, about his attraction to older women.

Malika asked: ''You and I are basically the same age. Have you always been attracted to older women?''

To which he jokingly replied: ''Since I used to hit on my second grade teacher,'' before adding seriously: ''But it's not even an age factor, it's just a connection.''

The 34-year-old television personality also asked if Corey had ever been to jail.

Although looking a little shocked at her brazen question in the upcoming finale of their E! reality show, he told her: ''Nah. I ain't mister perfect, none of that type of stuff. No trouble that's a disrespect or threat to another human. But don't f**k with me.''