You cannot get a male Fennekin in Pokémon X. Fennekin (and its evolutions Braixen, Delphox) are gender-locked to female in Pokémon X.
Fennekin is in the Field egg group. A male Fennekin (from Y) + Ditto → eggs can be male/female normally (87.5%/12.5% ratio). But the starter itself is version-locked.