Kendall Jenner and Devin Booker SPLIT a week ago after 2 years together

 Kendall Jenner and Devin Booker are calling a timeout on their love story ... and we're not sure who we're feeling saddest for Kendall or Stormi.

According to multiple sources and reports, The Kardashians reality star and Phoenix Suns shooting guard have broke up after two years together. A source gave details to E! News: "Kendall and Devin hit a rough patch recently and have been split for about a week and a half."

The couple had a "really nice time" in Italy together during sister Kourtney Kardashian and Travis Barker's wedding festivities, the insider explains, "but once they got back, they started to feel like they weren't aligned and realized they have very different lifestyles."

Kendall told Devin she "wanted space and time apart," according to the source, who shares, "They have been in touch since and do care about one another."

However, it may not be a permanent breakup, as the insider notes, "They both hope to make it work, but as of now, they are split."