Iron Man - Magnetic Series
The Courting of Tony Stark by boombangbing, first in the Magnetic Series. Long and Plotty Tony And Pepper, covering the first 11 years and onto the first and second Iron Man movies as well. It's followed by Magnetic, which covers the Avengers movie (or at least the promos and pre-production) and brings Steve Rogers into the picture as well, and the three of them are rather adorably domestic. There are also a half dozen more sequels that I have yet to read, but considering how much I've loved the first two, I imagine this series will be taking up a rather significant portion of my week off.