"I'm extremely, extremely happy for [Nick]," Jessica told Ryan Seacrest, in an interview on his KIIS-FM morning show on Thursday. "I don't know where all of those rumors came from.
U.S. & World
"My mom actually called me and told me that everyone was saying that I was saddened and I was just in complete shock!" she added.
Although the former "Newlyweds" stars may not have enjoyed a fairytale ending with Lachey, the bubbly blonde said she "couldn't be more happy" for her former spouse and his new love.
"Our relationship was over a really long time ago so it would be nice if everybody could move on with us and really just celebrate the love between him and Vanessa – I do," Jessica told Ryan. "I wish them nothing but the best."
As for Jessica's love life, the Texas-born singer-actress-mogul said she's happy to be spending Thanksgiving on the East Coast with her new boyfriend, ex-NFL player Eric Johnson.
"My first New York Thanksgiving!," she told Ryan. "[Eric's] family is going to be with us on the float at the Macy's Day Parade, and my family will be there."
Copyright 2010 by NBC Universal, Inc. All rights reserved.
This material may not be published, broadcast, rewritten or redistributed.
Related Content from AccessHollywood.com:
VIEW THE PHOTOS: A Look Back: Nick Lachey & Jessica Simpson