Ashlee Simpson opened up about Pete Wentz during an interview on Ryan Seacrest's KIIS-FM radio show, US reports .

Ashlee Simpson opens up about Pete Wentz

"I didn't know I'd be getting married right now, but I'm so happy to be!" she said. "I'm a lucky girl."

"That part I am keeping sacred," she said, "but I will tell you that it was very thoughtful, and he did a great job.

"Of course, it was thoughtful," she added, "He's like that."

"It's definitely a big diamond!" she said. "I go, 'Oh, my God, I can't believe its on my hand!'"

Image WENN