The 19-year-old starlet split from the actor last November following two years of marriage, but the pair recently reconciled and are keen to renew their vows.
Courtney's mother-turned-manager Krista Keller told Fox News: ''Courtney realised just how much love she really had for Doug. They really love each other and wanted to be together.''
The blonde beauty announced she was splitting from the 54-year-old star last year because she couldn't handle the age gap between them and she just wanted to enjoy being a teenager.
She said at the time: ''Doug and I decided to separate and end our marriage because of the obvious - Our age gap of 34 years. Right now I'm just looking to have fun and to grow into who I am as a woman and be single and independent and build my own foundation.
''I'm just my taking the time to be me and be single and be 19 and to try and be as much as a normal 19 year old as I possibly can.''
However, Krista - who had to sign off her daughter's marriage certificate because she was only 16 at the time - believes Courtney has had time to experiment with other men following the split and has now realised no one can compare to Doug.
He also slapped a jet-lagged Taylor Hawkins.
The acclaimed performer had just cancelled touring due to a battle with cancer.