Selena and I have grown apart: Demi Lovato

'Heart Attack' hitmaker Demi Lovato has revealed she and singer Selena Gomez are no more close like before.

The two were said to be best friends before Lovato, 21, stopped following Gomez, 22, on Twitter, sparking rumours of a rift with her, reported the Daily Mirror.

"I think it's just one of those things where people change and people grow apart," Lovato said when asked for the reason behind unfollowing the 'Come & Get It' singer.