Becca and Jesse from Life Goes On. It just goes to show because Becca is Kelie Martin and she is my favorite actress!! But on a more serious note, the show was going on in the early '90's and HIV was still something that a lot people were afraid of. Jesse had gotten HIV from careless sex and he and Becca got together and they weathered a lot of tough times. It was a great show. Unfortunately they only have the first season on DVD, but I would love to have the whole show.

Other than that, I did love Ross and Rachel. I also loved David and Darlene, Dan and Roseanne from Roseanne the show. Um let's see...I tended to like couples that had difficulties because I feel like it showed real life, I was able to understand them more.