[She knows. At this point, it's almost a sub-conscious move but that doesn't change that she knows what it does to him. She nods, biting her bottom lip as she reaches up to run her fingers down his neck and across his collarbone.]
Yup. At least it works for me. And if I weren't such a mature, non-jealous girlfriend, I'd point out that I'm pretty sure it works for other people too.