updated 01/17/2012 AT 7:50 AM ET
•originally published 01/17/2012 AT 3:45 PM ET
The couple have indeed split, a source tells PEOPLE. But the source says the lovebirds, who were inseparable for much of their romance, could very well get back together.
Jenner hasn t commented on the breakup rumors directly, but seemed to address it with a cryptic post on Twitter saying, “Everybody RELAX.