Naruzeldamaster
Inkling
A couple of my characters are funny to write with regards to sex because one of them is a mega flirt but if anyone flirts back they panic lol the other one is simply paranoid about anything romantic whatsoever because she's so inept at it.Everyone has something they suck at. Mine is transitions. Give me sex (please), give me quality violence. but dear heavens, don't ask me to get characters across a bloody street. There's only one way to keep it from happening.
Practice. Lots and lots of practice. And once you have a solid acquaintance with the "rules" in your head - I'd call them expectations - you can start breaking them to see how they respond.
I personally avoid sex in my stories because while I don't mind it being there I groan whenever it crops up in the usual places in spy movies. I'm probably bad at writing it but honestly I don't think it has a place in my stories outside of the usual fade to black lol
Istar