<human>: Could you distill the essence of the text into 1-3 sentences?

I have a male friend who I've known for I wanna say close to 4 years at this point. I met him at uni, we kind of clicked because he introduced me to my boyfriend (who was his classmate) and who I've been dating every since. So obviously, I feel as though this person is very much a part of my life, not only because he introduced me to the love of my life, but also because he's one of the best, nicest, friendliest people you can ever meet, I can't count the amount of times he went out of his way to help me or my boyfriend just because he knew we needed help with something.

Ever since I met him however, I began to notice certains thing about him - his facial expressions, the way he talks, the things he says and his general outlook on things. First off - he doesn't talk about his problems. He occasionally goes on a rant about one of our mutual friends, but their usually more silly than actually serious. We tell him about our problems non-stop, to such an extent that I often feel bad about complaining so much to him, but he on the other hand, I don't think, has ever talked about any problem he's ever had. He occasionally said he was feeling tired from work/school, but he never talked about it at length.

Anyways - he's depressed. I'm 99% sure he is. But he completely refuses to seek help. I've brought it up a couple of times on separate occasions (as politely as possible) and he actually got very upset and felt like I was insulting/making fun of him. We later on made up and I brought it up once again and he got even more upset and told me if I kept going on about it, he'd stop hanging out with me entirely.

I don't want to generalise, but I feel as though his background (he's eastern european) really puts a societal pressure on him and he feels like psychiatry is something "weak" people do and he's terrified of being perceived as weak, so he doesn't want to accept any sort of help or support.
<bot>: Friend is depressed, doesn't want to seek help. I'm scared he might end up taking his own life eventually.