A man wakes up to his hands tied to the bed posts. His wife comes in wearing lingerie. She pulls his pants down. It is implied that they have sex.
A woman wears a sheer top, her bra visible.
A man and woman kiss. It is implied that they have sex.
A woman opens her coat for a man, revealing that she is wearing only lingerie. It is implied that they have sex.
A man and woman start to have sex. He says something that offends her, so she leaves. He follows, fully nude, his butt visible.
A man kisses his wife. She resists because she is unhappy, but it is implied that they have sex.
A woman takes off her husband's shirt. They kiss.
A woman is shown in lingerie in bed, handcuffed to the bed posts. Her husband comes in dressed as a fireman. He takes off his shirt and shows her his butt in a thong. It is implied that they have sex.
No actual nudity whatsoever, and the erotic situations are ones you could see on daytime US TV