The Middle Distance

Sense of touch. You know this body, you might have been there before. Your partner is helping and guiding you. Your hands and your mouth have been surveying the landscape, and you've been humping against each other for a little while now, in different positions, kissing and stroking and playing. Your body is fitted to theirs, and you know exactly where you are in relation to them; even the size difference has been accounted for.

You don't need sight to find anything, as long as you've got the other four senses in full strength.