You should stfu about him and his life. Especially if it's not a problem that is hurting someone else. Anything you do is going to fuck him over. Don't believe

You should stfu about him and his life. Especially if it's not a problem that is hurting someone else. Anything you do is going to fuck him over. Don't believe someone at work (boss, HR) is going to turn his life into a disney movie of helping love and happy endings. There are going to be mistakes that will let you know it's time to act. The first time you catch him doing a blunder that affects other people, take him aside and talk to him about it directly. Tell him you want him to enroll in some sort of treatment program. After that, if he keeps causing negative outcomes for people, then you tell HR or the boss- which will get him fired, end of story. Don't let yourself believe some insane narrative like people are writing on here where the boss or HR will "help" him. He's just going to get fired. So, understand that before you make any moves in 'official' directions.