AceShowbiz -

Amy Winehouse has reportedly crafted an emotional song about her estranged husband Blake Fielder-Civil. The British R&B/soul singer is said to have written the track after hearing report in the media that Blake will be a father to British woman Gileen Morris' child.

"Amy still felt they had something between them and that one day they'd be together again. But this news destroyed her," a source tells The Sun. "She sat down with her guitar and started writing 'The Ultimate Betrayal'. She keeps repeating the line 'Blake a baby, no, no, no.' It's very haunting."

Amy is rumored to pen the song while she was staying on Caribbean isle in St Lucia. No words are shared on whether or not the track will be included in her upcoming not-yet-titled studio album.

In previous news, Amy Winehouse was expected to debut new materials from the new effort during "Island Records 50 Year celebrations" to be held at the Shepherds Bush Empire on May 31. "I hope to play some new songs," she wrote on her official website. "I'm busy in the studio at the minute, too busy to go out and have much fun really."