I was finding a place for lunch whilst at work.
I googled the only cafe in the village and a porn site came up that was blocked by work.
Turns out that hackers can hijack site and turn them to porn sites.
The poor couple who own the cafe had no clue at all.
I think you came on too strong unless there are lots of other details you haven't mentioned.
Have you considered that he doesn't really have much of a sex drive and his academic work is more rewarding to him??
There are people on earth who are more turned on by research and their careers Vs sex itself.
Maybe he has a set goal in mind he trying to persuade. Maybe his purpose in life is just to be some great academic researcher.
Also, it's worth seeking help from a doctor.
Many reasons for a low sex drive ...low thyroid etc. Pr is he just too busy on his new goal that he can't multitask well.
Some people, especially those who maybe very slightly bipolar have spurts of episodes which are manic in which they can literally do a project in 6 months that would take 3 years normally. During the manic phase, they are high on adrenaline. They can't sleep and all they can think about is their project. They will literally not be able to give time to themselves or family or friends. I'm talking about 10 hours a day everyday or more. The manic phase can last from days to months or in some cases years.
I talk from experience. When I did my a levels I would literally be waiting for the manic phase to hit me. I failed my as levels and knew that I could still pass my a levels.
Luckily second year of sixth form in the Jan I resat the whole of the first year (3 as levels and my a levels Jan exams)
I got full marks. The teacher couldn't believe it.
It was manic phase from sept to Jan. I studied 16 hours a day. I would wake up at 4am and study till 8am. Go college. Whilst in lessons or walking I would always be revising in my head. I could not switch off. I would shower going over my notes in my head. I would study after college till about 10pm and then sleep.
I had no time for parents,family and literally made no friends in college.
When I got my results I basically had a b in everything without the last two a level exams.
Unfortunately the manic phase ended once my results were out.
And I skipped school and just slept
The human mind is weird.