Ah, for me, the thing that started me feeling as though it was romantic was the Doctor calling her 'beautiful' in episode three. And if that's a perfectly platonic statement to you, then things would read differently. Well, and there's the "woman you love" thing in Dalek and the dancing conversation in The Doctor Dances and so forth. For me, those are explicitly romantic things, as opposed to affectionate friendship (though I fully agree that losing a friend can be just as devastating as losing a lover).

Thinking about Jamie too much is terribly depressing. He barely even remembers the Doctor. It's horrifying, really. At least Rose has her memories.