Gavin proposed to Charlotte in April, flying the Welsh warbler for a romantic lunch at a secluded spot in Cornwall.
But it seems the romantic gesture just wasn't enough, and after much 'soul searching' the celebrity pair have told friends they will be going their separate ways.
'It is an incredibly sad state of affairs. Both Gavin and Charlotte are deeply distraught,' an insider told the News of the World.
'But after a lot of soul-searching, they realised this is the best course of action for them and the children. It was a mutual decision.'
And the pair - who were together for five years - have wasted no time in getting on with life following the announcement.
Gavin jetted straight off to Spanish party capital Benidorm with a group of male pals, reportedly hitting the bars as soon as his budget flight touched down.
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And newly slim Charlotte - who is expected to re-launch her pop career in the wake of the split - was spotted splashing out at the shops and visiting McDonalds with the couples two children, Ruby and Dexter.
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