Consider the breed standard for the personality and temperament of a french bulldog. The Frenchies I've met have been spunky and outgoing. I would be wary of a shy pup.
FCI Breed Standard
BEHAVIOR / CHARACTER : Sociable, lively, playful, sporty, keen. Particularly affectionate towards his masters and the children.
French Bulldog - Wikipedia, the free encyclopedia
The French Bulldog, like many other companion dog breeds, requires close contact with humans. They have fairly minimal exercise needs, but do require at least daily walks. As a flat-faced breed, it is essential that owners understand that French Bulldogs cannot live outdoors.
French Bulldogs are very sweet and an excellent companion. The French Bulldog rarely barks and if he does it's often to draw attention, to point out that he needs something or just because he is not happy. This breed is patient and affectionate with its owners, especially with children, who are especially protected by the females. French Bulldogs can easily live with other breeds when the proper introductions are done.