Exploration is an exciting element to a relationship. In following the doctors order, it has been weeks since they've fucked. Her mind has been taking that time to explore thoughts that she is excited to test.
She has been spending the night trying to be in the moment but can't stop her mind from wandering and imagining how it should end.
He can see it. He's been noticing her body signals throughout the evening. Her eye blinks are lasting longer, as though she is picturing images behind those lids. Her breaths in are ending with small bites of her bottom lip, as though she is stopping herself from moaning with imagination.
He knows it's the right time and heads over to the bed while asking her to do the same. She seems to walk by him in slow motion while he can see her face blushing pink and unsuccessfully hiding it. When she makes it by with her back to him, he takes a step in. She can feel his heart beat and his hands tracing their way down her arms so gently. There is sensation of something she doesn't recognize. It is a warm texture that tickles and is following his hands. When he reaches her wrists, he wraps his strong fingers around and pulls them together. She now realizes that she was sensing rope.