"Marauder Reminders" by Jenulus

This is an unfinished Lupin/Tonks fic that, to me, portrays their relationship in the most canon-honest way.

http://www.fanfiction.net/s/2257981/1/Marauder_Reminders#

I think it was Jenulus's original intention to cover their whole courtship, but she only managed to get nine chapters in, so she covers their first meeting at Grimmauld Place and their growing friendship/flirtation.

I just really like the way she portrays these characters. Tonks, in particular, is wonderful, as she is a bit gruffer in this fic than most others.

I'm breaking another one of my rules by posting a piece that's unfinished, but who cares. This had a really, really good start, and it's worth looking into.