WARNING: I DON'T KNOW HOW TO FLAIR THIS, CONTENT WARNING !!

hi! hello!
im seeking support as of right now. i do not have bpd. i have a very close friend, 17 M, who has bpd. very heavily recognised between 3 therapists. i am his favourite person, i've further known him since 2018, and i am worried for him.

not about above stated! however,

recently his parent has died, about 2-3 weeks ago. and he is grieving very hard, which is very much understandable. and i understand as a person living with borderline, this is affecting him hard. 

however this us heavily affecting how he is with me, it feels as if i do not get seen, he doesn't read my messages, and each message is simply just;
"hi," "ok," "i have work,".

(this sounds incredibly selfish, im not sure how to completely word this.)

[CW: SUI MENTION]:
he has also mentioned that he may not live until the end of the year. i proposed a big plan i have to meet him in person one day. he did not mention this to me in person, however found as a post on instagram.
[END]

im worried for him, he spends a lot of time calling other friends, however he's dry with me. he doesn't speak of events, i feel as if i cannot mention my own irl friends, what i do, he explained that he "wants me to not worry about [him] and stay happy with others."

i do not know what to do. he doesnt send me things like funny photos or songs that he likes anymore. he sends them in different places, to different people, and he no longer opens up to me, he looks happier with other people around. 

again i am worried! he's been like this for a few weeks even before one of the heavier reasons said above, and i don't know what to do. 

im scared he may do something that will not only hurt himself, but hurt others. i think he's at his lowest point since ive known him. 

tips? suggestions? more than appreciated ❤️