Ooh, this is such a fascinating thread. Right up my alley, so to speak. Thank you, Scott.
I spent some time as a friar, cloistered within a Carmelite monastery. Though there were "special friendships" formed within my monastery, I never saw any proof of overt homosexual activity. I was very young at the time and developed a particularly strong crush on a fellow friar, who just happened to be drop-dead gorgeous, by the way. He sure did look stunning in his Carmelite habit! But nothing ever came of it, and I would never have wanted anything to come of it. In my personal experience, it would have been very difficult to have conducted a tryst in my monastery.
We were kept busy by our superiors every minute of the night and day, chanting the Divine Office throughout the day in chapel, fulfilling other prayerful observances, meditation, contemplation, communal meals taken in silence in the refectory whilst listening to religious lessons being read to us. Speaking of silence, its observance was demanded. Within the cloister, signs reading "Silence" were posted at regular intervals. And let's not forget the manual labour. There was always plenty of manual labour. My monastery was a working farm. We had no farm labourers to help us. We were the farm labourers. Yes, folks, it's true, I really do know how to milk a cow!
We took our vows of Poverty, Chastity and Obedience very seriously. Contrary to popular belief, it was the vow of Obedience, not Chastity, that finally convinced me that I did not have a religious vocation. For example, one day I had spent many hours polishing the cloister floors and was very happy with the result. I was standing back admiring my work (sin of pride?) when the Prior came along and told me to re-polish the cloister (a huge job). I explained that I had just finished polishing the cloister and he responded, very calmly and gently, "Re-polish the cloister floor, Brother." It was an "obedience" test I was being put through, and I failed it big time. Boy, I sure did resent having to re-polish that cloister! Things such as that finally convinced me to "leap over the wall."
I guess what I'm trying to say here is that we were kept busy 24/7 and when it came time to return to our tiny, individual cells at night, the only thing we had the energy to do was fall asleep immediately. No energy, or desire, for hanky-panky. And I'm sure life in the medieval monasteries would have been much harder and more exhausting than I experienced in the 60s-70s. It is my personal belief that much of the scuttlebutt about horny monks, racing each other off within the medieval cloisters is just that, scuttlebutt. However, having said that, I have absolutely no doubt that by saying so, I am leaving myself wide open to now being told about all the individual, well documented accounts of such monastic liaisons.
I can speak from my own experiences only.