Former Hills star Jenner and singer Lavigne have called time on their relationship after almost two years together, it was announced in January.
Entertainment magazine Life & Style reports that a source confirmed the break-up, saying it was down to opposing views on marriage.
Avril, 27, was previously married to Sum 41 singer Deryck Whibley and reportedly wanted to go down the aisle again - this time with 28-year-old Brody.
Could Jenner have been put off marriage by his step-sister Kim Kardashian's recent failed union?
More than 40 perfectly preserved ancient shipwrecks accidentally discovered at the bottom of the Black Sea.
Fragile golden and silver scrolls believed to be “spells” to invoke good or evil spirits were unearthed with ancient skeleton in Serbia.
Stress of moving house can help boost memory, a recent research has found.
The prenup house, made of carbon fibre elements and semi-transparent wooden layer, can be split in two if marriage doesn’t work.
De-extinction of mammoths through DNA sequencing and genome editing can help restore the grassland system, scientists have claimed.
Faraday cage wetsuit prevents sharks from detecting tiny electrical signals from divers’ muscles.
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