Washington, Jan 26 : Troubled singer Amy Winehouse''s jailed husband Blake Fielder-Civil has written an emotional letter to his parents, describing his `disappointment' over his wife's recent behaviour.

Fielder-Civil's lawyers had filed divorce papers earlier this month after reports of Winehouse being involved with former rugby player Joshua Bowman in the Caribbean came out, reports Contactmusic.

The Rehab singer and Bowman have both denied being romantically involved, with the singer vowing to salvage her relationship with her husband.

But Fielder-Civil has now revealed his reasons behind his decision to break-off his relationship with the star, blaming Winehouse for talking about their sex life and allegedly cheating on him while he has been behind bars.

"Does anyone deserve this kind of treatment? Am I that bad? Amy''s words and actions have disappointed me a lot," the letter, obtained by British tabloid the News of the World, read.

"The comment on my ability in the bedroom has caused a lot of humour among my fellow inmates. I must try harder with my next girlfriend!

"It would be all too easy to get into a war of words. The impulse to retaliate is strong but the need to act with dignity and respect is a must. I''ve taken everything on the chin and had my character assassinated but I''ve got nothing to prove to anyone. I know what I''m made of. I''ve made mistakes and I''ve been punished. In short, I want to be left alone," the letter stated. (ANI)