Allegation of near-suicide and PicoN

Hello Rabbi,
I wanted to ask, some guy from the yeshiva (17 years old, Haredi from a very closed family) that I know has a difficult past – he was thrown out of all the settings, raped, his parents are divorced, they beat him, sent him abroad on one ticket and so on. He told me that he thinks a lot about committing suicide and he doesn’t see any good future for his life on the horizon, lives in constant suffering and sees no reason to continue living. He wants to kill his parents who don’t talk to him, aren’t willing to bring the family together with him, aren’t willing to talk to him, etc., etc.
Towards the end of this conversation, he suddenly asked me if I was going to take anything out of this conversation and tell anyone. Because after all, he was working on me and was just looking for attention, which is nonsense because he would never commit suicide… and he’s also really happy with his life… in short, don’t tell anyone.
1. Now, I wanted to ask the Rabbi what he recommends I do in this situation? Should I tell the guardian who is responsible for him?
2. Does the rabbi know of any good arguments to make to a candidate in such a situation. What to say to him, what not to say?
 
N.N. It is important to emphasize that he told me that he had been hospitalized for a period of time and was really begging not to go back to the way he was and felt like a drugged person. Even after the conversation, he seemed to be in a pretty smiling state overall.
One thing that I feel certain about is that during the conversation, he really didn’t seem to be lying to me, as if out of the blue and everything, but at the end it seemed like it had gone through some kind of twist, it seemed like he had returned to normal.
I’m pretty lost and don’t know what to do with this situation. On the one hand, he’s begging me not to tell anyone, but on the other hand, I don’t think anyone will take care of him but rather send him to the hospital like they used to.
Can the Rabbi advise? I really don’t know if this is true or not and what to do about it.
PS He also has a lot of questions about faith and he defines himself as a non-believer, does not perform commandments in secret, etc. But I once talked to him about this subject, so today he is only satisfied. In any case, one of the reasons he told me was that he is afraid to commit suicide if there is reward and punishment, etc.