Love is elusive for the Humphries family these days -- TMZ has learned that Kris Humphries' parents are going through a divorce of their own.
According to documents filed in Minnesota, Kris' mom Debra filed for divorce from husband William earlier this month. The couple has three adult children -- Kris and his two older sisters, Krystal and Kaela.
There will be some serious burger money up for grabs in the split -- William owns several Five Guys Burgers and Fries restaurants throughout Minnesota.
It's pretty ironic ... Kris is fighting a divorce from Kim because he says it goes against his religious beliefs. Perhaps it's time to take a cue from mom?
It's unclear how long the couple was married ... but it was definitely longer than 72 days.