Onmund and Brelyna like each other a lot but they are both too shy to make any advances.
Brelyna was actually Neloth's old apprentice, but because she was sensitive and he was an asshole, she could deal with it anymore and left.
Legate Fasendil has a soft spot for the Khajiit traveling merchants because they remind them of his mother and father. Whenever he sees them, he buys a few things from them but tells them that they should really stop selling skooma.
Oh, and I was reading a really good fanfic on this site about Erik the Slayer and now I'm convinced that He and Lokir were bffs.
The Eye of Magnus is actually a minature replica of Mundus that Magnus had made because he was the architect of Mundus. It also has a strong link to Mundus itself because of this. Ancano figured this out and wanted to use it to destroy Mundus and become a god. When he cast magic on it, he was literally unraveling Mundus itself.