The 'O.C.' alum shot down the news of the new 'Hills' star and D'Amore fired back.
A source tells ET that Barton was the only cast member from the first season not asked back.
The actor opened up to ET at the red carpet premiere of his new horror comedy, 'Ready Or Not,' on Monday.
While they split earlier this month, they pair was still sweet on one another in this clip from the new episode of the MTV series.
Another season of the hit reboot is on the way!
ET has your first look at the showdown on Monday's 'The Hills: New Beginnings.'
Mischa Barton is still in touch with a few of her co-stars from 'The O.C.'
ET spoke with Barton on the red carpet at the premiere of 'The Hills: New Beginnings,' airing June 24 on MTV.
Barton is a new addition to the cast, along with Pamela Anderson and Tommy Lee's son Brandon.
'The Hills: New Beginnings' premieres June 24 on MTV.
Take a peek at the show's first look.
ET's Katie Krause spoke with Cavallari exclusively in the Coast Lounge at her Little James Pop-Up Brunch on Saturday, March 16.
The four reality stars cover the new issue of 'Cosmopolitan,' and talk returning in front of the screen.
ET spoke with the reality star at her Uncommon James pop-shop in Los Angeles on Tuesday.
