The 33-year-old restaurant owner, who is dating Cole, 30, since April, has recently moved in her place, reported Daily Mirror.
"Jean-Bernard was based in France, he has work over there. But he's now living happily with Cheryl," a source said. He is said to be besotted by the 'X-factor' judge.
"It's all going so well. Cheryl is totally in love and the happiest she has been in a long time. They just click and Jean makes her laugh," the source said.
"Cheryl has to be in England for the X Factor so it seemed the perfect solution for her to move him in. Cole moved to her Hertfordshire home after splitting from Chelsea ace Ashley Cole in 2010. He stayed in their marital home in Surrey," the source added.