This is sad to hear.
Bruce Jenner is not only going through a gender transition, but also a breakup with Kris Jenner, and it's not easy on the reality TV star.
[ Video: The Kardashians Believe Bruce Jenner Is Hiding Something In This KUWTK Sneak Peek! ]
In a clip for the upcoming premiere of Keeping Up With The Kardashians, Bruce chats with a very pregnant Kourtney about how hard it is not being in the house with everyone every day.
And the reason why may surprise you!
Ch-ch-check out the clip (below) to see what it is that Bruiser misses most about living with the Kardashians!
Tags: bruce jenner, bruce jenner photos, jenners, keeping up with the kardashians, kourtney kardashian, kris jenner, kuwtk