My friend's a psycho

So today a friend of mine sent an audio to me. Well, it was another friend through her chat but it doesn't really matter. What they said was that our common friend had told them that he had thought about plans to kill us and the people around him. I had previously heard about this from him, but I didn't take it very seriously. I was like 'oh, okay, that's not very cool' and forgot about it. Because I know he won't kill anybody -- he's pretty much a normal teenage boy.

But texting with my bestie we commented about him. And I agree with her. I should've probably come to this conclusion myself but I never took it seriously. The conclusion was that it wasn't normal and that it was creepy, but that we knew he wasn't going to harm anyone.

The problem is that I told the friend who sent me an audio this. She didn't answer further. But for a few days she's been considering stopping being out friend. Honestly, the girl is a bit problematic in this sense because she always tells everybody what she thinks. And although it can be good, it can get us to this point where she doesn't want to be our 'psycho' friend friend's anymore.

Also, I had been preparing a video because I really enjoyed this year thanks to these friends and I wanted to thank them somehow. And my idea was to play it at this boy's birthday because it's almost in New year's Eve and it'll be the last time I'll see them in 2025. But if the tension lingers I might not show it that day. Or maybe I do idk.

What should I do???