08/13/2009 at 10:00 AM EDT
If you thought the news of Kourtney Kardashian being pregnant
was shocking, wait 'til you find out who the father is!
Appearing on the Today
show with sister Khloe to promote their new E! show, Kourtney and Khloe Take Miami
, Kourtney, 30, needed no prodding to reveal that the baby daddy is "Scott [Disick], my ex-boyfriend ... who is now my boyfriend."
The on-again, off-again couple reportedly broke up in January, but have been spotted spending time together since then. "I thought you were over Scott!" was host Kathie Lee Gifford's immediate reaction, and Khloe asked, "You guys talked about the title already?"
Regardless of the friendly teasing, Kourtney says she is "very excited" to become a mom.