Added some more casual pairings I'd be interested in:

Conqueror x Queen/Noblewoman*
Elf* x Dwarf/Human
Angel x Fallen Angel
Angel/Fallen Angel* x Human/Demon
Vampire x Human*
Werewolf x Human*
Jock x Geek*
Cheerleader* x Shy Guy
Abused Wife* x Neighbour
Boss x Employee/Employee's Wife