I watched.

They sat at the back of the bus. He had one arm slung around her shoulders and her right hand rested comfortably on his thigh. Their lips met, slowly but purposefully. The kiss deepened. Their upper bodies melded into each other. His free hand covered hers on his thigh. For a long while, they kissed, oblivious to the rest of the world. Then they broke away, faces still inches away from each other, both breathing hard.

Simultaneously, they looked down where skin met skin. Their hands twisted around for a couple of seconds, playing, feeling, experimenting. Then he threaded his fingers through hers and enfolded their palms. Silently, they looked up at each other and exchanged enigmatic smiles. A profound moment seemed to have just passed.