Ten pairings featured in Harry Potter fanfics I have read:
- Draco Malfoy/Laura Madley
- Harry Potter/Susan Bones (duh)
- Fred Weasley/Hermione Granger
- Remus Lupin/Severus Snape
- Ginny Weasley/Luna Lovegood
- Pansy Parkinson/Ron Weasley
- Hannah Abbot/Remus
- Minerva McGonagall/Petunia Dursley
- Harry/Hermione
- Penelope Clearwater/Percy Weasley
Links provided on request.