Lying Face to Face Cuddle: This style is a signal of a very intimate relationship. In long term couples it shows they are still very much in love, and new relationships tend to do this more often.
Spooning with your partner: Whether little or big spoon, this shows strong communication, affection and satisfaction. This is typically long term relationships but in new relationships it shows that they are really comfortable with them. This style also releases Dopamine which makes you feel happy.
Resting you head on their chest: This style is a display of dominance and submission in the same way it is a demonstration of trust, affection, and love. In straight couples it is said that women can then be wrapped up by their man and felt secure.
All of this is told by a body language expert Tonya Reiman. Check out the full story here