According to the gossip site, Piek split with "Star Trek" star Chris Pine back in April, and rumor has it that she and Seacrest have dating following his big break up with actress Julianne Hough.
A source told US Weekly that Hough blamed Seacrest's busy work life for putting strain on their two-year relationship.
"Dude works all the time," the source said. "He never sleeps. It's a lifestyle she couldn't handle anymore.
"First vacation I'm taking in a long time. Off to another paradise... Goodbye cape town! Had the most love filled week ever. Xxx" Piek tweeted on June 28.
Rosie O'Donnell unveils nearly 50-pound weight loss
Iranian woman stops the execution of son's killer