I hate it when people give me quick fix advice and the "think positive" crap, but then again he's not your life partner or long-time friend, so maybe you've been coming on too fast and too strong with your heavy stuff to him and that's his way of protecting himself, plus asking you to leave the problems aside during the date.
In any case, now the ball is in your court, you have to answer him what you want.
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There are two means of refuge from the miseries of life: music and cats - Albert Schweitzer