Liriel

I live in a reality where S2 and S3 never happened. That makes Isabel and Alex the couple that got together and then didn't break up (especially off-screen )

I would really have liked to have seen these two develop a relationship dynamic. Everything was so new when S1 ended, and they never really got a chance to be a couple, on-screen. They were two of my favorites individually (Valenti being the other) and I'd have loved to have seen them together. Was looking forward to it in the hiatus between season 1 and season 2, since they were the only couple of the three still together at the end of the season. Hopes dashed. Though that's certainly not the only reason I didn't like season 2.