At 72, I have been having a strong rectal temperature fetish thoughout my life and most of the girls/ladys who shared my life also shared this fetish. As a matter of facts, I have come to consider rectal temperature taking as a way of making love, and a very intimate one.
When I take a girlfriend's temperature on my knees, I enjoy the view of her behind and the control ir gives me of the situation When my girlfriend takes my temperature on her knees, besides that wonderfull feeling of the registering thermometer slowly moving deeo in my rectum, I like so much the sensation of my erect penis rubibng her, hopefully naked, thigh
În my late twenties, for several months, I had a long standing relation with a very smart language student who was very much into medfet.
She was a bitt bossy and she had set the rule that every time we were to have sex, she would give me a comprehensive medical exam. This mock exam allways ended with her taking my rectal temperature on her lap.. Then, as she played casually with the registering thermometer, letting it go slowly back and forth deep in my rectum, we would discuss rhe kind of sex we were going to have a few minutes later.
More recently, I had a several years long relation with a ladyfriend who shared my interest for rectal temperature. When the Covid erupted, she insisted on moving with me in my place, arguing she wanted to take care of me, at risk for the virus due to my age
Then, she decided that we would take eachover's rectal temperature on our lap every day,, stark naked, first thing in the morning. These temp sessions often turned into preliminaries.