Doherty, 34, who dated Kate Moss, is said to have met with Delevigne for jam sessions at his place many a times, reported Sun online.
"Pete is besotted with Cara. He sees her as a replacement for Kate who he constantly admits is his greatest love. They're now in touch practically every day. Cara loves hearing Pete talk about Kate and rock 'n' roll - and making music with him," a source said.