I straight up do no longer do any serious romantic relationship RP of the monogamous type. For one thing, I'm not very good at it and for the second, I've yet to have RPed in one where the other person didn't stop playing, or I stopped playing, or the game died, or we got super bored about it or... That said, my characters might still have some meaningful relationship with lovers. Friends with benefits sort of thing, where he gives a shit about them and if they went and said 'Hey, let's not sleep together any longer but let's still be friends' he'd be 'absolutely no problem. Hey, wanna hang out on friday and get shit faced and throw snowballs at the Templars?'-sort of thing.
Maybe part of it is that the 'leading up to sex'-RP is damn entertaining. The flirting, or awkward, or funny situations, or serious situations for that matter and that spark of attraction when it happens. Heck, I'd say that personally, if there was none of that before the actual TS, I don't know if I'd even RP out the sex at all, I'd likely not be interested - or I'd feel a bit weird, like... The RP leading up to it gives you so many cues to make it a good scene when it does, right?
I guess that's my ramble of the day. More to come later.