Pop tart Ashlee Simpson is said to be thrilled about her big sis Jessica Simpson’s relationship with John Mayer, saying he’s great for Jess following her divorce from Nick Lachey.
"Ashlee loves John. She thinks he is great for her. More importantly, Jess is happy," a friend of Ash’s told People magazine.
Jessica and John are said to have been dating for eight months, but initially denied reports they were an item.
The pair recently holidayed together in Rome.
Jess’ friend Christina Milian has also spoken about the relationship, saying: "This is a relationship that's not for the cameras. It's not about celebrity. It seems like they truly have an attraction to each other."