Serana was a constant companion of the Dragonborn, fighting along their side ever since they helped her overthrow her evil father. There was nobody else they trusted even half as much as each other, sleeping in the same room, killing enemies together and so on. The Dragonborn obviously liked Serana, but she always seemed just out of reach. Stoic, nonchalant and reserved, she certainly didn’t seem like a lover.
You both had just cleared a random cave, Serana digging through a chest. Those hips were shaking subconsiously, sometimes she was just such an accidental tease
“Alright, i got some garnets and petty soul gems. You’re gonna keep these around as collectors items and never sell them, aren’t you?”
She knew you good, and knew how much of a hoarder you were. While poking fun at you, you saw her rare, beautiful, cocky smirk