The pair scrapped wedding plans following the end of their relationship in the autumn.
Liverpudlian Range took to her Twitter this morning to tell her followers of her heartache, writing: "Very sadly, after eight years together, myself and Dave decided to separate a few months ago.
"I wish him nothing but the best in life x"
A statement from Berry's spokesperson read: "Dave Berry announced today that his engagement to partner Heidi Range has been broken off.
"Mr Berry announced the news today although the couple agreed to separate in the autumn.
"The split is amicable and no third parties are involved and he will make no further statement on the issue."
In May this year Berry was singing the songbird's praises publicly, saying of Heidi: "She's amazing. She makes the house smell nice with all her lotions and potions."
The former lovers had been an item since 2003.
And on New Year's Eve in 2009 Berry proposed while the couple were on holiday in India.Happier times ... Heidi with Sugababes bandmates Amelle Berrabah and Jade EwanGETTY
Londoner Berry got his break working for kids' TV channel Nickelodeon before moving to MTV in 2002.
He's gone on to present shows on Channel 4 and ITV.
From January he will co-host the Capital FM breakfast show with Lisa Snowdon.
Range, 28, was an original member of girl group Atomic Kitten.
But in 2001 she shot to fame after replacing Siobhan Donaghy in The Sugababes.
In 2006 the group ? with an ever-shifting line-up - was named the most successful female act of the 21st century with six No1 single and 18 Top Ten hits.
The current band ? which also numbers Amelle Berrabah and Jade Ewan - are expected to release their eighth album next year.