Man becomes sigma math genius. Midwit foid can't handle it.

My boyfriend is obsessed with smoking cigarettes and mathematics.

My boyfriend has recently returned to university as a mature after a long hiatus from education. He is completing a fairly challenging stem degree and so I accepted he would have to commit more time to his work, but his reconnection with mathematics has become concerning.

He now spends a majority of his day 'studying mathematics', despite the fact I often see very little work being done. When I ask him how his work is going, he gets very defensive and refuses to open up, claiming it's in my best interest because 'it will be boring to me anyway'. He then retreats to his room, where I hear either classical music, or the now familiar voice of youtuber 'The Maths Sorcerer' through the door (Some kind of mathematics based motivaitonal guru).

He also has taken up chainsmoking during the day, which although I'm personally not too bothered by, has become another issue where he becomes very defensive. He regularly sends me studies and reddit anecdotes about the efficacy of chainsmoking as a nootropic, and how universities like MIT are littered with cigarette smoke from 'high performance humans'.

He goes so far as to tell me that all of the greats such as Betrand Russel, Einsten and 'Rachmandynoff'(?) were all habitual smokers (Anyone know who tf that last person even is?)

I've tried to contact his friends to see if he shares more about his new secretive lifestyle with them, to which I was told that he basically just talks about drinking coffee, smoking cigarettes, eating eggs and doing mathematics without going into any further detail.

I feel like he has completely changed personalities and lives as some kind of isolated savant rather than my loving boyfriend and I have to fight to even spend time together. I want to try and maybe meet him where he's at and become more interested in what he's doing, but he just keeps everthing so secretive? Has anyone else had experience dealing with a boyfriend who gets obsessive about things?

EDIT: I can personally confirm he is actually enrolled in a university