Some pairings ! 

[hider=***]+ [s]Nurse x patient[/s] 

+ Doctor x patient / Nurse

+ Mental hospital 

+ Creator x living doll/robot

[s]*Totally did not [u]almost[/u] die the other night in an accident and now I live to write the story!*
[/s][/hider]

I have other ideas but for now that's all folks! 

Edit: Here's some more ideas and pairings..

#college or work
#complicated relationships
#forbidden
#arranged marriage 
#rich x poor
# popular x unpopular 

To be continued