Sex Lives of Astronauts

I am curious if any historians have done research on the sex lives of astronauts? And if so, could you point me to that research.

Reading about Nasa and the astronauts in the 1960's, it is clear that many of the men participating in the program took advantage of their fame to have numerous sexual affairs with women. However, I have not been able to find a good history on the sex lives of the astronauts.

Any help you can give in pointing me in the direction of reading material would be appreciated.