I'm really close in age to you yaaay lol
So, I've realized I really like specific pairings - starting off with a power imbalance, often one is captured (like by a pirate or the opposite country's warlord) or subdued in some way. I like all the angst that breeds :P But then I don't like straight-up non-con, so usually it works best if they both at least think each other are attractive, then one seduces the other... then I like it if they fall in love, and the one with the upper hand ends up being nice than even he expected.
One potential hiccup. I haven't RP'd much lately but I know that I really prefer fairy short replies back and forth, this is because usually if my writing partner writes 3 paragraphs - there was a time in there that my character could and *would* have said or done something, but in the 3 paragraphs their character has done and said a lot of things without pause. I find it unnatural, and I really prefer that my character is given a chance to react immediately, if that makes sense.
I also like just "headcannoning" - without actually RPing. I've found 99% of people can't really do this, but I think it's worth mentioning. Basically it just follows "what ifs" and you decide what the characters would do and how they would react if they met, and if this happened or that happened.
If we do rp, definitely the characters and the initial setup is most important. Let me know! Unfortunately I'm not on Toyhou.se a lot but I'll try to check in more regularly for a while here.