Hello, I was interested in the below:
Brother/sister- would this maybe be able to be changed to MxM, and possibly step-siblings?
Kidnapper/hostage
Boss/secretary- I know it's a bit odd for a secretary to be a male but, could this possibly be changed to MxM as well? If not, I'm fine with MxF. 
Teacher/student- What would the age gap be? And, could this also be MxM?
Nun/Demon
Boarding School- Would MxM be okay? If not then MxF would be alright.
Pirate/captive

In MxF, I prefer to play the female as I just find it really difficult for myself to play the male in straight romances.
As far as limits go, I have none.
And, in ways to roleplay, I can roleplay through pm and kik.

Message me?