Since you can't fake body language while you are sleeping, the way you sleep next to your significant other can reveal a lot about your relationship. So if you want to work on your relationship, maybe you should start with your sleeping habits?
Spooning indicates a level of trust within the relationship. Your partner has your back — literally. Since this classic sleeping position is both vulnerable and sexual, it means you are secure in your relationship.
When couples sleep back to back, it suggests an intimate and comfortable relationship. While both partners are not facing each other, there is a level of familiarity in being able to sleep while touching. You don't have to be wrapped up in each other to know that the other person is there for you.
When partners sleep back to back far away from one another, it indicates discomfort in the relationship, either because the relationship is new or there is an unresolved tension. Being this independent of one another could mean that it's time to make some compromises and meet in the middle, literally and figuratively.
Sleeping facing your partner could indicate that you feel distant from your partner and are looking for more intimacy in your relationship, especially if you press your pelvis close to your partner. It's a way of looking your partner in the eye (so to speak) and connecting on a subconscious level.
Sleeping facing each other but not touching indicates an emotionally demanding relationship. One partner could be looking to communicate with the other partner more. Try having more conversations when you are awake!
If one partner takes over the whole bed, it could be more than a sign of a blanket hog. When one person dominates the bed, it indicates that they dominate the relationship. It could be a sign that things are unbalanced emotionally, and not just between the sheets.
When partners sleep with their feet touching, it indicates trust within the relationship. The feet are one of the last parts of the body to be touched romantically, so this position indicates a level of physical and emotional comfortableness with the other partner.
If you always end up on one side of the bed with the other left completely empty, it could indicate an uneven balance in the partnership, with one partner putting more effort into the relationship than the other. Maybe it's time to discuss the reason for this imbalance.