The the two pop stars hooked up as teens in the early 2000s before Lindsay Lohan came into the picture and Aaron alleged cheated on Hilary with Lindsay.
Now, Carter says he regrets losing Duff and sounds an awful lot like he wants her back.
Duff recently split from hockey player husband Mike Comrie after three-and-a-half years of marriage.
Carter re-tweeted a photo of his ex-girlfriend posted by a fan on Twitter, writing, "hilary duff is flawless."
He followed that post with a series o...
1. Jonah Hill and Leonardo DiCaprio
Leo and Jonah found friendship on the set of "Wolf of Wall Street" and have continued their relationship ever since. Said Jonah to E!,...