'Bye b****': Demi Lovato unfollows Selena Gomez on Twitter 'after posting angry message'
Demi Lovato has sparked rumours she has fallen out with Selena Gomez again.
The Heart Attack hitmaker has previously admitted her long-time friendship with the Spring Breakers actress, 21, has been strained in the past.
And she sent the rumour mill into overdrive when she stopped following Selena on Twitter on Wednesday shortly after apparently posting a cryptic angry message.
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Feuding?: Demi Lovato has unfollowed Selena Gomez on Twitter, and allegedly called her a 'b****'. The pair are pictured here in August 2011
The 21-year-old singer allegedly wrote: 'Swimming away from the bulls*** bye b**** (sic),' but if the post did exist, it has since been deleted. MailOnline has contacted Lovato's rep for comment.
The duo, who have both sought treatment in rehab, have been friends since they starred in Barney & Friends as children. Selena is still following Demi on Twitter.
A source told Hollywood Life: 'Demi doesn’t need any extra drama, she’s learned from her own recovery to lose the people that bring her down and Selena is too much of a headache.'
Growing apart: Demi, seen in June and Selena, pictured in May, have had friendship troubles in the past
Last year, the former X Factor USA judge said: 'We've been through a lot together, we've had periods of times we here we grew apart and we just didn't really talk.'
But she added: 'Now we are in a place where I think we realised that life is so short and that when you have people in your life that love you so much then, you should just always be around them.
'Everything about her, she has a great soul, she's talented, she's beautiful, and she will always be really, really close to my heart.'
They go way back: The former Disney stars have been pals since they starred in Barney & Friends as children
Her alleged feud with Selena is not the only Twitter drama Demi has been facing this week.
On Friday, the Sonny With A Chance star's boyfriend Wilmer Valderrama revealed his Twitter had been hacked.
Naked photos of Demi, which have previously been leaked had allegedly been posted on his account, along with a vile cartoon describing the star as 'fat as f***'.
New friends: Selena flashed a lot of leg in a split skirt while posing on a beach with pals on 4th of July
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