Liam Gallagher has revealed he has not spoken to his brother Noel for years, and does not even have his phone number.
Formerly bandmates in Oasis, the pair's ongoing feud spiralled out of control in 2009 when Noel quit the band.
Liam, now the frontman of Beady Eye, told Radio 5 Live's Phil Williams, he has nothing to say to his brother.
When asked in an interview why he did not just pick up the phone and call his brother, he said: "I haven't got his number."
Discussing the frosty relationship with Noel, Liam said: "I've got nothing to say to him. Not interested in the slightest right now."
Once known for his frequent drug intake, Liam Gallagher has revealed his band's new album was written with a "clear head".
Formally the Oasis frontman, the singer said his group Beady Eye had a "new-found focus", suggesting he had moved on from his excesses.
Gallagher, 40, said: "We had a new-found focus when we were writing it - we really got our heads down and got our s*** together - clear heads, none of that c*** from the 90s."
Gallagher's brother Noel walked out on Oasis in August 2009, following a cancelled performance at V Festival.
The group have even used iPhone apps to work on some of the songs for their forthcoming album BE, out on June 10.
Noel Gallagher and Damon Albarn's famous rivalry was put aside last night as the Britpop legends performed together for a cancer charity.
The Oasis and Blur guitarists, who publicly traded insults at the height of their fame, performed Blur's 1999 hit Tender, along with the band's guitarist Graham Coxon, The Jam legend Paul Weller on drums and US author Michael Horowitz.
Albarn once said: "I can't make up with Noel. Britpop would be over and heaven forbid that we'd ever admit we'd all grown up!"
However, last month the pair flaunted their new friendship at the Brit Awards, where they shared a table and hinted of a possible future collaboration.
Noel Gallagher has revealed he knocked back a marriage proposal at a gig from a male fan.
The musician was left bemused by the cheeky request as he was performing a gig at the Teatro Metropolitan in Mexico City.
It came just hours after Gallagher felt the tremors from a Mexican earthquake, which led to him being evacuated from a TV interview. Writing in his blog, the pop star said: "I'll forever remember my own show for a funny scene with someone holding up a placard that said 'Noel will you marry me?'.
"Thing is, it was actually a guy - and he looked genuinely upset when I informed him I was already spoken for...funny though." Gallagher said the show marked a first during his many years of gigging. "The support band got booed off. Booed off! I've never seen that in nearly 20 years," he wrote.
Noel and Liam Gallager look likely to suffer differing night's at the NME Awards, with the former set to win the Godlike Genius award and the latter nominated for Villain of the Year.
Big brother Noel, who will perform at tonight's event at the Brixton Academy, is also nominated for four more gongs, including Best Solo Artist, Best Album and Hero of the Year.
Liam, however, will compete with Justin Bieber, Lady Gaga, David Cameron and Nick Clegg for Villain of the Year and his new band, Beady Eye, are nominated for the worst band category.