Lovers are two, but not two. The Kamasutra explained it all.

Sculptures on the temple walls of Khajuraho take the explanation one step further. Couples are seen in the throes of passion-grasping, fondling, loving. All distinctions melt away.

Sex was never a ritual act. It was a philosophy and a science, which our sages understood very well.

Why else would it be celebrated in literature and painting?