Singer Amy Winehouse has locked the man she is accused of having an affair with out of her London home. The "Back To Black" singer had allegedly broken off her 11-month marriage to jailed Blake Fielder-Civil last week after falling for her manager's assistant, 24-year-old Alex Haynes.

However, on Monday Winehouse angrily denied the rumours outside her Camden abode, insisting she's not cheating on Fielder-Civil - who faces charges of perverting the course of justice - and blasted the media for spreading "lies."

And now the troubled star has barred Haynes from her home by locking the front door from the inside - something he only figured out as he was trying to enter.

A source tells WENN, "Alex turned up on foot, got his keys out and tried to open the door. He was obviously confused. He tried knocking and ringing her but to no avail. But she was definitely at home. He tried to shrug it off as if everything was normal, but you could tell he wasn't happy. Eventually he just walked off."

-Amy Winehouse Pictures

(This news article provided by World Entertainment News Network)