Sharon crush on Alden
No offence, but honestly, what did Sharon really see in Alden? Sure, he was sweet and nice, but nothing else than that. He was rarely (or never) funny or charismatic. I'm not saying this because I disliked the character, but I didn't thought he was a funny boyfriend enough for Sharon - or Nina Harper, for that matter.
I remember one episode when Sharon was in camp and she and Maria flirted with a guy, then Alden came visiting and Sharon (her inner, narrating voice, if you remember) said that she thought Alden was boring compared to the other guy (which turned out to be a self-loving liar).