As with most stories, it's probably best to begin at the beginning. 'High Wire' can be read on it's own, but 'Memory and Future' needs some background information from the first story, otherwise some references could be very confusing!
These stories are my visions of how some alternative pairings could work. They are not to be taken as canon.
All these stories, unless otherwise specified, are rated PG
Disclaimer: The Gundam Wing characters do not belong to me, but to Bandai, Sunrise and other fine people. I am only borrowing them for a short while and promise to return them in one piece.
Kimi no Koto wa Itsudemo Mamoru (I will always protect you)
(Heero and Hilde/Duo and Relena)
High Wire
(Quatre and Catherine)
Introducing an original character - Sophy Raberba Winner!
Memory and Future
(Duo and Relena)
Remembrance
(Treize and Sally, Wufei and Sally)
Not really a part of the KNKWIM storyline, but this features an unusual pairing, so it fits on this site!
Part FiveRated R