Drew Barrymore and Justin Long have split up.

The couple — who knew each other for seven years before they co-starred in romantic comedy 'He's Just Not That Into You' — had been dating since August 2007. Drew's representative said: "I can confirm the split with no additional comment."

However, the couple are said to be determined not to let the split ruin their long-term friendship.

A source close to the couple said: "They are still friends, and will always be friends."

The pair had previously made no secret of their love for each other, and 33-year-old Drew even spent Thanksgiving with Justin's family in Fairfield, Connecticut, last November.

Following the holiday, 30-year-old Justin said: "I've been very fortunate. I just feel very blessed and happy!"

In March, Drew insisted she was happier than she had ever been, adding: "My cheeks hurt, I'm so happy!"

Drew has a history of being unlucky in love.

She has been divorced twice, with her marriage to Jeremy Thomas lasting just a month in 1994 and her union with comedian Tom Green fell apart after five months, finally ending in October 2002, just over a year after they tied the knot.

Following the end of her second marriage, Drew began a five-year relationship with The Strokes' drummer Fabrizio Moretti, which ended early last year. She has also enjoyed brief romances with actors Luke Wilson and Zach Braff.