Oh, this is easy for me. :lol:
Jackie and Hyde from That '70s Show
There was always something there. They started off hating each other; she was the spoiled bitch and he was the burnout. But honestly, I don't think they ever really hated each other. He was always there for here. At Prom, when Kelso was cheating. He told her that she'd find a great guy and she'll be happy, low and behold, it turns out it was him. They grew so much when they were together. She tried to be less materialistic, he made her think. And Jackie allowed Hyde to love openly. She was the first girl he said "I love you" to. She helped him with his real dad and helped him to see that he could be more than just a burnout. Besides the fact that T7S is a sitcom, their love seemed so real, it seemed more than just the "We'll put these two together for a good laugh" couple. They grew, they learned, and they loved each other. And what happened in the last season was so awful. So if I could pick one couple to be together and have their happily ever after, hands down it would be these two.