Miley Cyrus has spoken of her sadness amid reports she has split with underwear model boyfriend Justin Gaston.
The U.S. pop singer and actress wrote on her Twitter page yesterday: 'Tears are words the heart can't express.'
In a direct response, teen heartthrob Gaston, 20, a former contestant on U.S. show Nashville Star and wannabe country singer, wrote: 'How many tears are in there? They've gotta run out soon right?'
Broken heart: Miley Cyrus has split from her boyfriend Jason Gaston, seen here with the Hannah Montana star in April
A source close to the couple told People magazine on Tuesday: 'They broke up on Sunday before she left for Savannah.'
Cyrus, 16, flew out to the Georgia location to begin filming for her new film, The Last Song.
The source hinted their break-up was fuelled by Gaston's jealousy over her close relationship with ex Nick Jonas, who she sang with on Before the Storm, which premieres on Friday on Radio Disney.
Source of jealously? Miley with Nick Jonas, who she used to date, shooting a video in Malibu over the weekend
Game for a laugh: Miley throws her arms around Nick as his brother Joe watches
'They have been recording music and spending more time together,' said the source.
Cyrus and Jonas also saw each other in Los Angeles on Saturday for Disney's Friends for Change video shoot.
In the online Twitter battle, Cyrus also commented: 'Why does saying good-bye hurt so much?'
She later added: 'Daddy's giving me therapy. This is worth 10000000 dollars.'
Pop princess Cyrus shot to fame in 2006 with the launch of Disney show Hannah Montana where she played a teen leading a double life - one a high school student and the other a pop star.
Sweet sixteen: The singer at the Elizabeth Glaser Pediatric AIDS Foundation 20th Annual 'A Time For Heroes' Celebrity Carnival in Los Angeles at the weekend
