Ryan Cabrera: 'Ashlee Simpson Will Be A Great Mum' 9/1/08

Pop star Ryan Cabrera believes his former beau Ashlee Simpson will be a great mum.

The singer dated expectant mother Simpson in 2004, before the pair split later the same year.

Simpson went on to marry Fall Out Boy rocker Pete Wentz earlier this year (08) and the pair announced their pregnancy soon after.

And Cabrera has no doubts about the star's mothering instincts.

He tells People.com, "She'll be a great mom. She's just a good person and she's dedicated to her family.

"It's a good family. It will be a good home."