I thought this was cute in light of Valentine's Day creeping up around the corner. I have to admit, I ahd to look up Serge & Jane (still not sure who they are) and Sid & Nancy (I thought I knew who they were).
I would add the following couples:
Lady & the Tramp
Noah & Allie
Lucy & Ricky (or Desi, in real life)
Then maybe I would add Me and D. I like our "love story" and it has been an easy love.
Who else would you add to this list?