Convenient timing!

Blake Griffin and his longtime fiancee Brynn Cameron split in July, shortly before he began romancing Kendall Jenner, Us Weekly reports.

"Blake and Brynn broke up in July. They ended things on good terms and they are still friends while raising their son and daughter," a source dished to the mag. The pair are parents to Ford, 4, and Finley, 12 months. Cameron also has son Cole with former NFL player Matt Leinart.

The last time they were spotted together was at a July 12th dinner for his team, the Los Angeles Clippers. Shortly after, the NBA star began stepping out with Kenny, and many are wondering if the supermodel broke up Blake's relationship.

A source tells X17:
    "Moving trucks were at Blake and Brynn's $11.5 million Pacific Palisades home the last week in July. Brynn was the one that moved out, but being at the house must be too tough, because Blake has been renting a pad in Malibu and hasn't been back since. The first time he was spotted with Kendall was on Aug. 9 at the Kendrick Lamar concert, but they've been secretly hanging out way longer than that. Considering the timeline, all signs point to Kendall being a home wrecker."

While the athlete and Kimmy K's little sis are indeed hooking up, it doesn't look like it's going to be exclusive anytime in the near future.

"Kendall and Blake are seeing each other. They have been hanging out a lot and are having fun together. It’s a little early to call them boyfriend and girlfriend. Kendall wont settle down soon – she is busy and likes her freedom," an insider added.

Throwing a bomb into your personal life over a fling sounds like the worst decision ever!