And the hardest part i think is that the best spot for the arm is right between the boobs where your hand is close to the heart. Not sexual, but its just the best way to hold someone close that is lying with you, sometimes holding a boob is nice, but that takes it a step beyond friendly, but still not meant to lead into sex. But wrapped tightly around the mid section is pretty good too.
Face to face is nice along with on the side. Recently my shoulder causes issue with laying on my side which really sucks!!!!!!!!