Sex is difficult to write about because it's just not sexy enough. The only way to write about it is not to write much. Let the reader bring his own sexuality into the text. A writer I usually admire has written about sex in the most off-putting way. There is just too much information.
Toni Morrison...fact was she knew more about them than she knew about herself, having never had the map to discover what she was like. Could she sing? (Was it nice to hear when she did?) Was she pretty? Was she a good friend? Could she have been a loving mother? A faithful wife? Have I got a sister and does she favor me? If my mother knew me would she like me? (140)
Toni Morrison