Solid mongol campaign

My (21F) boyfriend (21M) thinks he's a mongol warrior

My boyfriend and I met 2 years ago and got along pretty well. He's very handsome and smart and i think I was attracted to him from the start.

We started dating about a year ago when we both agreed to start a relationship. The start of the relationship was pretty awkward, but always very happy and stable nonetheless.

Now the only thing that bothers me is his obssession with Mongolia. We live in a country, whose people migrated to Europe from a place nearby Central Asia. We both are descendants from those people and that's why my boyfriend thinks he's a "Part of the horde".

I don't know how to translate everything he thinks he is to english, but I can say that he really considers himself to Be a descendant of a famous mongol warrior (I forgot the warrior's name). He constantly makes weird humming sounds and tries to sing by using his throat(???).

The last straw for me was when we were invited for a party and my boyfriend walked up to the speakers and put on a throat singing(????) Something playlist from YouTube on full volume and tried to sing along. It was embarrassing and I had to leave early. My boyfriend stayed there for a couple of More hours and I learned that his friends are also a part of the "horde".

I'm ♥♥♥♥♥♥♥ fed up.

EDIT: No, this is not a ♥♥♥♥♥♥♥ joke.