For a wealth of research and personal experience-based info on sex after castration, I suggest consulting Dr. (PhD) Richard J. Wassersug's 2014 book written for men and their sexual partners, for whom the man's prostate cancer failed a primary cure and his recourse is to live without meaningful bodily testosterone. Such men become T-free by surgical removal of their testicles, shut-down of all their testicular T production by taking prescribed drugs, or smothering their T production with prescribed parenteral estrogen. The effects on sexual interest and sexual performance of this Androgen Deprivation Therapy ("ADT") is profound and is much the same regardless of the means of reducing T to the same low level that surgical castration obtains.
This 2014 book is described at "
http://www.amazon.com/Androgen-Deprivat ... 1936303663" (Amazon page linked (
http://www.amazon.com/Androgen-Deprivat ... 1936303663)) Following a posting by EA's "Jesus", I bought a copy in a hurry in fall 2014 to see what it has to say on ADT by parenteral estrogen. Alas, this book is rather guarded about alternatives to prevailing mainstream medical ADT knowledge, but is very readable as to the mainstream kind, plus patient guidance in great detail. Chapter 6 has 24 pages on Effects [of ADT] on Intimate Relationships and Sexuality. Six glowing reviews, all 5-star, in that Amazon page as of April 2015.
One reviewer wrote, My wife and I learned much of what's in this book through trial and error. If you have been smacked with a prostate cancer diagnosis and, while still reeling from the impact, have been told you need to start ADT, study this book. Take its recommendations to heart. Doing so can save you agony (physical and psychological) and allow [you] to deal with the life-altering side effects of ADT in a calm, organized manner. If you're soon to start ADT, or are already in its clutches, buy this book. It will improve the quality of your life. Honest.
See also this site (
http://www.lifeonadt.com/)for more on the book and a 1.5-hour video of retired university professor Dr Wassersug presenting much of the info to a gathering of ADT patients and their SOs: [/URL] [url]
http://www.lifeonadt.com/ (
http://www.lifeonadt.com/)
Men on ADT vastly outnumber men castrated for all other reasons combined; up to 4% of all men living in prosperous countries will eventually end up on it long-term and functionally be eunuchs. Presently 1% surgically, 3% chemically, and a few by high-dose estradiol. Perhaps unlike your story characters, men on ADT will be mostly seniors in their 60s and older, when their sex lives will have slowed for other reasons including long-term effects of their earlier, cure-intended primary prostate cancer treatment which will have disabled their semen production plus degraded their erectile function and reduced their phallic dimensions some, each in a YMMV way.
Also search "Richard J. Wassersug" for published interviews, articles, and medical journal papers which address effects of ADT-instigated castration on sex life. He has been outspokenly un-closeted about himself being an ADT eunuch since his early 50s.