
Madge has been getting support from the film director following her failed attempt to adopt a second child. Guy even made a public statement claiming the singer is a "fantastic mum."
Now, their new friendship has encouraged them to call a truce regarding their children. It was only a few weeks ago she won a court order to name the US as the children's permanent home.
Madge has agreed that he can look after the kids - Rocco, eight, and adopted David Banda, four, over the summer holidays while she's on tour.
A source told The Sun: "Guy absolutely dotes on his children and can't wait to have them for a whole three months.
"He is surprised and pleased that Madonna is being so generous - as she has at times been impossible.
"Madonna will be travelling a lot and agreed it makes sense for them to stay with Guy rather than constantly be uprooted."
Meanwhile, the father of the Malawian child Madonna wants to adopt is now seeking full custody.
Mercy James father James Kambewa, who has never met his daughter, says Madonna is a woman of poor morals.
He has written to the Human Rights Consultative Committee objecting to the adoption.
He said: "She is my daughter. Madonna has millions but that doesn't make her a good mum. Parental love is worth more than money.
"She doesn't portray good morals. How can a woman of 50 dance almost naked on stage? In Malawi, women respect themselves."
Madonna lost the right to adopt the child earlier this month. Her appeal will be held on Monday.