Help

Heya Trod, so I'm in a bit of a problem and I wanted to just vent a little and see if you could give some advice (It's good if you can't, I just want to vent)

So Nico has been sick for a while now, he has a bunch of problems and I don't know the full extend, but he's on meds and often very weak physically sometimes he doesn't feel his legs or has little to none brain power due to the meds basically melting him down, while on this state he's of course angry at it and often vents on me either directly or bashing/joking at me/doing jokes with me to just improve the mood and not feel bad about his current state, however he usually takes this too much to the eleven and often insults directlty at me or wishes for me to happen something bad and its 100% uncalled, he usually says he expects me to follow the joke but I *CAN'T* differentiate between "Serious" and "Haha go die bitch" because he's 24/7 on this mood of "idk maybe i was serious maybe i wasnt u dense bitch" and whenever I try to cheer him up i.e:
 + Post some anime girls fanart
 + Invite him to play Dragalia/Minecraft/Whatever
 + Just chit chat about anime or anything not related to irl
 + Post positive cheer images or write him some kind of "i love you pls don't give up you CAN and WILL do it"

His answer is always "fuck off" "thanks for reminding me that I didn't get Tamamo, fuck off." "not in the mood" "im back to my cave, fuck off"

I try to always brush it off and keep insisting on playing or doing something to cheer him up, always checking how he's, can you wak yet?, etc and I try to not to explode on his face because that's bad plus he's sick but this last weekend has been hellish, he doesn't want to play, I told him to go to sleep early so he can get some rest (he sleeps <6 hours a day and never takes naps) and he tell me to fuck off, i keep insisting so we play a bunch but again, he's very heavy on me, and both days from beggining to finish It's been a "I'm sick" "aaaaa i cant  feel my legs" "im frustrated" every hour or so, and i get it, he's tired of being sick and drinking like 90 pills per day (he passed out yesterday due to taking too much pills, i was REAL worried.) so im starting to get tired of him being always doom and gloom even when I try to talk, cheer him up or something

I told him around midday "oh im just farming fgo, busy week and all that" and his answer was "Fuck off, your account is already complete, you should be farming for me in JP or NA instead of just trying to be superior", of course this actually angered me, he's VERY jealous of my account in NA and offten tells me that he would rather never tell me about FGO and i go die in hell if he can at least get SSR instead of me, this actually hurt me, he prefers some fucking shiny PNG instead of 3 friends playing the game and chitchatting about it.

He fucking wants more a PGN than friendship.

I usually take this as venting too and I just ignore it or play "along" (even tho he's clearly insulting me for just having more shiny png) and say something like "nah, i just want to finish the event not grinding that much" (he shat on me so hard when i told him i made 152 boxes on nerofest and couldn't help him get 100 too.)

So anyway he tells me that and I kindly ignore it, he's been very moody, angry and beggy about his FGO account since basically he spent 5 months no SSR and i started ignored him, decided go and play Fate/Extella link to disconnect from him a little, kill some nameless and powerless enemies and enjoy the shiny NP's
So i play for maybe 30~40min and decided to check on him, i saw some unread messages but the important was that i was ignoring him and running away from him so he's doing the same and he's back at his cave, spent most of the day angry.

So he eventually goes sleep and i manage to at least play something with him at 3am (spain time)

I spent most of the night stuying and whatnot, stumble some wholesome Bocchi/Emma picture "psst stop scrolling, just want to say cheer up and be happy and have a nice day" so i share it with him, some more tweets of cute anime girls so he can wake up and have some eyecandy , hyped up the new Dragalia Banner and some more cute anime girls + my NP2 mordred pull.

He wakes up very early so i was still around and his answer to Mordred wasnt "ey gratz" or "np2 poggers", was just *Whatever*
So I greet him "ey good morning, how u doin?"

Then he answer the Bocchi pic with a "fuck off" and rambbles some about the anime girls, I'm not dumb and I'm tired, its 2am and I'm not talking with a moody Nico during the night after 3 days of moody Nico so i gently tell him "ey, so, ur not in the right mood so good night, i have uni and whatnot, have a nice day, you can do it! ^^!"

Then, he, of fucking course, rants about he cant walk, breath and headache and tell me to wait him to wait to talk instead of running out like a bitch, i can't sleep so eventually come back and tell him:

"I have uni in 6 hours, good night, have a nice day and tomorrow we can chat about how i feel, get better"
"Stop being a shitty person that rants and insults his friend for everything that happens irl"

So new day arises, not even opening Telegram i have things to do.

Eventually i open and i see no new msg, hes mad of course, i just call him out.

So i write an actual card about how i feel about this behavior of Insulting and Ranting on me for everything and how im unable to tell appart when he's mad and he's joking and I ask what to fucking do then.

"Just wait until i finish writing"

So i tell him, ey your fucking greeting was a "Fuck off"

For the first time i told him "go die in your cave, enjoy it, im not trying anymore"

I'm not having this bs anymore, he can seek proffesional help or something if he wants to insult and rant instead of just letting it go, being overall angry is fine as long as you  dont target anyone that angry, but he ALWAYS targets me and brushes it off as a Joke and I'm not buying his shit today.

His answer was "Ok, dont ever talk to me again"

So i'm here stranded, i know i fuck it off but so did he, multiple times, and I firmly belive he's just having a bad time plus he has had a very rough life (tons of bullying and jokes about scars) but he can't just go and tell me bad things everyday and expect me to eat it like nothing and keep giving him my love and care and he probably just need psy help plus physical love (i.e hugs, caring, relaxing him out of anger) but i can't do it.

So that's it, i dont expect an advice, i just wanted to let it go since i have none to express how i feel.