London, June 21 (IANS) Singer Leona Lewis has split with her long-time boyfriend Lou Al-Chamaa due to her busy work schedule.

The singer’s busy schedule and her current British tour are said to be key factors behind the split from Al-Chamaa, reports dailymail.co.uk.

Though Lewis’ spokesman refused to comment on the reports, a friend close to the star said: ‘Obviously being a long-term relationship, it makes things very complicated and extremely difficult. But they have decided it is best they go their separate ways.’