When she was young she had an odd idea that kissing Sasuke would be some sort of sweet and cute thing. A pure kiss of true love or something like that.
She was a bit of a child then, she supposed. Kissing Sasuke wasn't tender or gentle in any conventional sort of way. It was usually quite the opposite, rough, violent, and full of biting and nipping.
Sometimes he did the biting, sometimes it was the bruising kind that medical chakra rescued them from uncomfortable looks at their mouths later on.
At the moment though, it was mostly teeth and tongue along his jaw, nipping hard enough to leave red marks that faded on their own, determined to earn difficult-to-receive shivers and shudders from the violent Sasuke.