Cinema Lover Boy

Adult young man, 18+, wants to show his friends how sexually mature he is, and wants to be the first of his friends to lose his virginity-with a girl, of course. There is an old time cinema that shows movies with strong content, but which also has a reputation of being a place where adults can have sexual encounters. He vows to be the one to find out. He goes when his friends are out of town. What he finds there is something very different than what he expected.
He is soon naked and on his knees, helping the men in the cinema to enjoy the film...