So this was the one I was talking about- the one I read on FFnet. I loved the two of them in the show from the beginning, particularly their scenes together (the first episode I watched was 7.3, with the "Colleagues are okay" scene, which made me fall in love with the show, for that reason, they will always 'be Spooks' to me =p), but you turned me into a shipper! =)

Anyway, really beautifully written, you make the idea of the two of them together feel completely right! Well done! =)