^ Wow, that's three "Harry and Seven" advocates, which is pretty amazing to me. Until Mach started this thread, I thought I might be the only one.
Make that four.
Of course this is assuming you believe that Seven is ready for an intimate relationship by the end of the series which I don't. However, I can see she and Harry gradually getting closer after the return to earth. He was always patient with her and saw her as a person before just about anyone else did.
He would probably also make a good sounding board for Seven after she discovers Chakotay got with the captain before Voyager hit spacedock and...
... wait, I keep forgetting that part never got filmed. All that J/C fanfiction!