Reintegrate part 1, part 2, part 3 by 
bruceybabe. R, Merlin/Arthur(Marlon/Andrew), Gwen/Lancelot(Lyn/Lance). When a young student, Marlon, meets the univsersity's star, Andrew, he starts to have dreams of a previous life. But can he remember everything before it's too late?
That fic summary did it all for me. A lovely reincarnation fic where Nimueh comes back to f**k things up a bit for out great heroes.
bruceybabe. R, Merlin/Arthur(Marlon/Andrew), Gwen/Lancelot(Lyn/Lance). When a young student, Marlon, meets the univsersity's star, Andrew, he starts to have dreams of a previous life. But can he remember everything before it's too late? That fic summary did it all for me. A lovely reincarnation fic where Nimueh comes back to f**k things up a bit for out great heroes.