All this talk of kissing.

This is how I see Faline and Fen's first kiss in headcanon:
Suddenly, a jolt of worry went through her. Without thinking, Faline reached out and grabbed him by his arm. "You don't have to leave, Fen-"
In a blur of movement, the mage found herself pinned against the wall, with a very angry-looking Fenris glaring down at her.
What else could she do? She squeaked in a frightened, albiet adorable, manner, looking shocked and a bit frightend. In the same instant, she felt herself enjoying, in sme odd way, the physical closeness between them.
Slowly, Fenris' expression turned to one of absolute horror, and he began to pull away.
Desperate to stay near him, if only in a physical manner, Faline reached forward and grasped him again, more gently. This time, he didn't do anything but stare at her, a questioning look dominating his impossibly green eyes.
For some reason, she found herself remembering the words of the old witch, Flemeth.
...do not hesitate to leap.Well. She leaped.
Not really thinking straight, she pulled herself forwards and crashed her lips to his in an inexperianced way. He stiffened with shock, but quickly gave in and returned the kiss. He let out a low, feral growl, and pinned her against the wall again.
She barely registered the feeling, concentrating soley on the ecstacy she was feeling from this unplanned, unexpected, first kiss.