There is a type of bone in the body called sesamoid bones. It is attached to one end on a bone while the on top is a ligament. Once a muscle moves, it glides through the bone to prevent contact between the bone and ligament, because once contact has been established, there would be continuous rubbing and friction would eventually tear the ligament.
I am saying this because I've been putting up walls between you and me and I hope you realize it's there to protect you from me.
I will love you, you already love me, you will be all over me, you will feel me, my grooves and twists, my every movement, my warmth,