Xs are Just what people in the UK put at the end of texts to symbolise kisses. To some it doesn't mean much they just do it out of politeness/habit whereas for others it might. To me it seems needy if a guy does imo or just unnecessary I feel like it feminises the text.

Seems like he's asking too many questions and yes/no ones at that whereas when he stated something "I have a thing for Asians" she also added something to the convo i.e. she liked white boys.

Convo doesn't feel like it flows and maybe tried to sexualise too fast? Depending on how she answers it might've paid off or if not bring it back under control