I would maybe suggest that he is indulging in some hyperbole because I am 99% sure that he doesn't stay awake at night thinking about her. If you have watched top gear at all when he was at the help you would know that silly hyperbole is his schtick.
It's funny to see the fallout, he's not exactly shy about this stuff but of course he's a privileged white man and she's a woman of colour so it's horrible and stuff...