rodneyscat

*glee*

Found it! Sorry I'm too late to help you avoid lotrips_finders

You were right on the author *grin*

"Reciprocation" by airgiodslv, in the "Undone" series she and sophrosyne31 did in 2004.

The story is at
http://airgiodslv.livejournal.com/55505.html

The post listing all of them in order is at
http://airgiodslv.livejournal.com/94148.html

and the memories list is at
http://www.livejournal.com/tools/memories.bml?user=airgiodslv&keyword=Undone&filter=all