Ravenous by tifftoff9 is my favourite sims2 series ever :happy8:
I don't know wether someone else here has told y'all about it yet, but i'm too lazy to go through all the pages.  Just thought everyone who loves vampire romance stories should read it.  
It was banned from the sims2 site cuz it contains quite detailed romantic scenes (Though no outright nudity)...i advise those younger than 13 (or children) not to read.  But anyway, it's a great story, here's the link to a page containing all the other chapter links:
http://www.tifftoff9.com/rav_ch_list.html