These were the couples,

Aurora and Heero
Usagi and Duo
Hotaru and Wufei
Makoto and Trowa
Ami and Quatra
Michiru and Zechs
Haruka and Trieze
Setsuna well someone will come :)

but I decided to change a couple of them, and I will explain why.

Aurora and Heero
Usagi and Wufei
Haruka and Trowa
Ami and Quatra
Setsuna and Trieze
Makoto and Zechs

Reasons why
name(age), planet, relationship

Aurora (15), Usagi (15), and Quatra (15); Moon; Triplets
Hotaru (13) and Duo(16); Saturn; siblings and they are cousins to Aurora, Usagi and Quatra
Haruka(17) and Zechs(18); Uranus; siblings and are also cousins to the Triplets
Heero(16) and Makoto(15); Jupiter; siblings
Trowa(16) and Ami(15); Mercury; siblings
Setsuna(22), Une(18), and Wufei(16); Pluto; siblings
Michiru(17) and Trieze(18); Neptune; siblings