If anyone is in immediate need of assistance you can go to the emergency room or call 911 for assistance.
National Suicide Prevention Lifeline is also an excellent resource https://suicidepreventionlifeline.org/
Yes, I think having a confident who is safe, a journal, a therapist, a priest, some other trusted other, etc. But it really has to feel safe because otherwise one would worry about a data breach, and that might make it even worse.
I thought of using that example to illustrate. There’s also the concept of a “double-bind” in psychology which is about the same. I also believe this dynamic is implicit in gas-lighting. There’s a Star Trek where this happens as well. Spock gives the well-intentioned yet genocidal computer instructions it cannot handle, and it breaks down.
Here are additional references about the potential harmful effects of pornography.
Here are a few more recent references: