Things must be heating up for Kylie Jenner and Cody Simpson — they're already double dating with her older sister, Kendall!

The youngest members of the Kardashian Klan showed up to the Dallas Mavericks/Los Angeles Lakers game at the LA Staples Centre last night to support older sister Khloe's basketball player husband, Lamar.

While it's totally sweet that they brought the boys along to support Lamar, there are a few things that are puzzling us about this photo.

Why aren't Cody and Kylie sitting next to each other and who is Kendall's mysterious blonde date?

If you recognise Kendall's new man friend let us know on Facebook or Twitter!

Update: We've just been informed that the cute blondie is Cody's best friend from Australia, Jake Thrupp.