Help find bl

It's a manhwa I think it's yaoi
Mc was a orphan that grew up in an orphanage and there he met this guy, they dated and lived together once they became adults mc work in tons of jobs so he could pay for this dude's education he paid even the clothes he used in a interview for a job in a big company, them the dude announced he was going marry a rich girl
Mc somehow ends in a hospital, I can't remember if he got in an accident or tried to off himself
Anyways there he meet ml a rich guy who is falling in love for the first time and it's with mc
Ml is super rich
Mls sister is the girl mcs ex is marrying