buffy and angel (thats what i think beacause i just watched that so yea)

Jack and rose (Titanic)

My choices:
Eric and Sookie
Buffy and Spike.

I think Spike & Buffy<3

Definitely Dr. Gloria Nathan and Ryan O'Reily from Oz!

buffy & spike

Izzy & Denny - Grey's Anatomy.

Eric-Sookie(TB)
Elizabeth Bennet-Mr Darcy(Pride and Prejudice)
Aragorn-Arwen(LOTR)
Satine-Christian(Moulin Rouge)

Spike and Buffy have the most forbidden love of all time.
Spike and Buffy are mortal enemies; the slayer and a vampire (who has previously taken pleasure in killing two slayers).
Buffy is the chosen one who is supposed to protect the world from darkness and kill vampires, but instead she joins Spike in the darkness and falls in love with him.

Clark Kent aka red/blue blur aka Superman from the TV show "Smallville". Anyone that Clark would love would put them in danger :`((

Angel and Buffy have the most forbidden love of all time. They are like Romeo and Juilet because they can't be together because if so, then something bad would happen.