With Composite Neptune squaring the Sun, this relationship will demand complete honesty in order to even be friendhship. With Aqua rising it's true that this is ideal, in general its a very good composite for a friendhship. And you don't have sun=mer=venus conjunction, they are all in different signs, so no love stellium.
I don't think this synastry shows one sided love, it shows potential, but if it will manifest is a matter of the people involved. He obviously has some blockages.. Which is odd because you said there are cultural differences and usually Uranus play here in the composite.