Switch your mind to a pair of young lovers. These are real lovers – not actors, an ordinary girl and boy – probably students at college. They are lying on his bed in the middle of the afternoon. You can tell this is real because the room is a mess and they have not cleaned up the dishes from lunchtime. They are fully clothed and kissing passionately. You can tell this is not the first time they have made love because they look comfortable with each other.

They are lying close, running their hands all over each others bodies and delving underneath each others clothes. At some point they stop caressing and separately take their clothes off. They lie down again and carry on kissing and caressing. You see his hand disappear between her legs and guess from the regular movements that he is rhythmically stroking her clitoris. She stretches and purrs in approval, then settles to become almost motionless as she concentrates on the sensation that is building inside her.

"Stop!," she says, "Come inside me" and she urges him to climb over her and insert his penis into her vagina. She pushes her pelvis up towards him and you can just see the in/out of his thrusting. If you look at her face you realize that she has gone into a world of the interior, her eyes are glazed, her attention far away, where only sexual feelings matter.

"Help me a little," she asks. He accordingly shifts one thigh and inserts his hand between their bodies. As he continues to thrust, his arm drums to the rhythm he is whipping up on her clitoris. Suddenly she starts to come, with her body shuddering and her head thrown back, rapid breathing huffs from her mouth. When she hits the high point of coming, she screams.

And as long as she goes on screaming her young lover does not let up. He thrusts and fingers with great energy. He drives on and forward. It is only when he is quite clear her climax is over that he withdraws his hand, closes his eyes and focuses on his own thrusting. When he climaxes, he does so in a quick series of spurts and hard gasps.

"Ooh," he cries, short and sharp, then collapses on her in a happy heap. She folds her arms around him and gathers his limp body in to hers.