London, Feb 4 - Singer Lily Allen, who had stopped tweeting to please boyfriend Sam Cooper, is back to the social networking site and has started posting messages.

Thsun.co.uk reported that the singer announced on her Twitter, 'Hello, I'm back,' following her Australia tour with Dizzee Rascal.

The 24-year-old, used to send at least 20 tweets a day to fans but admitted: 'My boyfriend gets really angry. He's like, 'I want to spend time with you, do we have to have one and a half million people in the room with us?'

IANS