Boys are different from girls. Girls like to be cozy all the time but boys don't. First of all, they like to get all close to you like a coiled-up rubber band, but after a while, they get fed up with being too coiled and need to stretch away to their full stretchiness. Then, after a bit of on-their-own strategy, they ping back to be close to you. So in conclusion on the boy front, you have to play hard to get and also let them be elastic bands.