I'd love to help you but you didn't give me a lot to work with.lex.nero said:I considered a number of options before deciding it would be cool if they were a succubus which could make more intimate scenes very dramatic and provide tension via fatal attraction to the male characters and male protagonist.
but speaking from experience if you make your female support character a Succubus you can't have her hook up with the male protagonist at all.
You can make the intimate scenes more dramatic by putting a bunch of one way sexual tension between the succubus and the protagonist that eventually drives him to get frustrated because she's more interested in getting laid than what they're supposed to be doing. or something like that.
but they shouldn't get it on with each other, it would be far to obvious.
Here's some general existentialist advice that I write with.
let your characters become real people to you and think about how they would react to the scenarios you're writing about.