Yeah, I liked Clana in season 1, but then the on/off thing just went on for too long. Especially in seasons 2 and 3. I liked them briefly when they were dating and happy in early season 5, but it seems that the writers never wanted to write them that way for long

I'd have thought that writing them as the sweet first love story for Clark to eventually grow out of, would be much more suiting to them them, than trying to make it the big epic love of doom. Especially when there so much stress was put on the angst of it all in season 3, and they'd only ever been on a few dates!