Guy Ritchie's girlfriend is expecting a boy.

The 'Lock, Stock and Two Smoking Barrels' director - who already has biological 10-year-old son Rocco and adopted five-year-old boy David with ex-wife Madonna - and his model girlfriend Jacqui Ainsley will have their first child together in September and friends have revealed it will be a third son for Guy.

They seemed very happy together. Jacqui kept rubbing her belly and tousling Guy's hair. They were just having a leisurely morning and enjoying private conversations with each other.

A close pal told Life & Style magazine: "Jacqui's having a boy!"

The couple are currently in Beverly Hills and eyewitnesses reported they looked blissfully happy together.

A source said: "They seemed very happy together. Jacqui kept rubbing her belly and tousling Guy's hair. They were just having a leisurely morning and enjoying private conversations with each other."

Guy and Jacqui have reportedly been hoping to start a family for some time and he is determined she should have a stress free pregnancy.

A friend said: "They have been keen to start a family for a while now. They're absolutely made up. We expect to hear wedding bells next year.

"Jacqui was crying with joy when she found out she was pregnant. They went on holiday because Guy is determined she takes it easy. He won't let her do anything more strenuous than argue over baby names."

Guy split from Madonna - who also has 14-year-old daughter Lourdes from a previous relationship as well as adopted six-year-old girl Mercy - in 2008 after almost eight years of marriage.