(Edit) title typo, should have been: please help me find this bl webcomic, losing my mind.

I believe a Thai bl currently airing is adapted from this webcomic, if I'm right this may contain spoilers for dead friends forever. If I'm wrong I'd still really appreciate the help in finding this webcomic.

I believe I remember reading it was originally a novel turned manga turned vertical webcomic. I read it in 2021 or early 22, and I think it(webcomic) was released somewhere 2016-19. It was on the shorter side 26-33 chapters. I'm fairly certain it was tagged yaoi, romance, psychological or thriller, it possibly had tags for supernatural and tragedy but I'm not at all sure. I don't remember the summary verbatim, but the gist of it was

"The last place I want to be is with this group, but here I am in the truck/van headed for a send of party for a member of the group moving abroad. A member I have a past with, but this may be the last chance I have to get information about my ex-boyfriend who disappeared after cheating on me 3 years ago."

As for the events in the story what I remember

After university mc gathers with "friends" from highschool, for a send off for 1 of their own thats moving abroad. We learn that he had a fwb relationship with the 1 moving abroad, the ml. They get to the house and strange things start happening. It all seems connected to mc's ex. It seems every single person there as well as the ex himself were responsible in some way for what happened to the ex.

Everyone begins hallucinating, and in fighting begins. They begin to question if someone else is in the house, or is there a supernatural explanation.

Around 2/3 into the story mc tells us through flash back that 1 of the group is the older brother of the missing ex. His family suffers from mental illness, the ex/lil bro tried to take his own life, and his mother did take her life after ex/lil bro went missing. Older Brother feels guilty, decides not to return to university, and begins making drugs to support himself as he searches for answers.

His father finds out he didn't return to university and calls him a disgrace before killing himself. Around this time the brother starts hallucinating or seeing the ghost of ex/lil bro and believes ex/lil bro is still there, I cant remember if it was before he started experimenting with the drugs he was making or not.

Around the same time he begins hallucinating/seeing ghost he goes to the mc to get his help finding out what happened to the ex/lil bro. They enroll in the school the ex/lil bro went to and begin to infiltrate his "friend" group. Around this time mc starts a fwb relationship with ml, brother finds out and accuses mc of cheating on the ex/lil bro, which he means literally cause to the older brother the ex/lil bro is still there. I believe the brother threatens the ml somehow, if the mc keeps seeing him. So mc refuses a relationship and mc and ml part ways.

Back in the present mc and ml both admit to their actions that led to the ex/lil bro going missing. Mc also admits that he was long over his ex, had been since he found out he cheated, and that he'd lied that he was still in love with him in highscool. He'd basically been held hostage by the big brother, unable to move on cause how dare he cheat on the ex/lil bro. Mc and ml have sex, and then things go to shit.

Brother isn't done with his revenge, we thought he considered mc his ally but we findnout he's been on the shit list since he "cheated" on the ex/lil bro in highschool. Brother manages to drug everyone left using a joint or cig, to get the drug in the air.

Due to the hallucinations the mc and ml end up fighting, in the midst of this I think a cop shows up and shoots the big brother saving those remaining. After mc and ml are still on the outs with each other, with mc saying ml is horrible and never wants to see him again. They go there separate ways, only for mc to think back and realize he was just as bad if not worse than he accused ml of being. He'd been the last to see the ex/lil bro before he went missing, and knowing he was suicidal basically told him to fuck off and die. Then turned around and used and hurt the only person ex/lil bro actually considered a friend. The ex/lil bro didn't know about ml part in his downfall.

Mc tries to reach out to ml, I cant remember if he went to his home or had to rush to airport. Mc apologizes for how he treated ml and ask for a second chance. Ml accepts and they get together, i think ml still leaves with the mc promising to save for 6 months and then follow the ml.

As for the big brother, he escapes after being shot but succumbs to his wounds after talking to the hallucination/ghost of the ex/lil bro. And this is were the possible supernatural tag comes in, after big bro dies it shows ex/lil bro still there leaving it open as to whether he was indeed a ghost or a hallucination.

I also remember the cover being the mc and ml facing each other in an embrace, the mc had a black shirt on and the ml had a green checkered/flannel shirt on and the were against a white back ground.

I remember the series was very grey, no one not even the ex/lil bro was a totally innocent victim.

If you've read this far thank you so much and if you can help me find this you'd totally be the savior of my sanity. I've looked through page after page of manga/manwha for 3 weeks now.

I believe the original novel and manga was Japanese, the webcomic I'm not sure if it was Thai or translated from the Thai version as I'm almost certain that the names in the show and webomic are the same. Although it could the Mandela effect as dead friends forever story line definitely reminds me so much of this webcomic.