sag sun, aqu moon, venus cap

my lover, in the past week and half, has begun to show old depressive inclinations due to neurotic sensitivities. for the past month we have been apart and unfortunately will continue to be apart until the end of august and he is showing some strain and is sadly closing himself off. his venus is in capricorn and he can be overly cautious and miserly with his affection when that cappy pragmatism overshadows the expressiveness of his sun in sagittarius. he has his moon in aquarius which calls for a lot of freedom and some instability in romantic relationships but for the most part he has been pretty stable until recently. any insight??