I can't remember the title but I think the author went by ChaosTheory. The first 2 or 3 chapters were Alistair/Isolde and had brilliantly written sex scenes (read: SPLOOSH) followed by a sort of interlude chapter featuring the Grey Warden. Yes, I did re-read it several times. It was that. GOOD.
Sadly, I think it may have been deleted several months ago. I had the title and author hotlinked in my profile before the site was revamped in hopes that the writer might re-post it and start updating. One line I remember went something like, "Show me how an Orlesian rides."
Anyone know if it's under a different title or penname? Maybe even hosted on a different site? Cheers.