•Threatens suicide or other forms of self-harm.
I would just like to make a comment about this.
As a sub who suffers from mental health problems this one could be complicated as to whether it is a 'red flag' or not.
Sometimes when I trust someone I will think allowed, or share my thoughts, feelings or problems. This could involve Suicide or Self-harm as I have done both in the past. I just wish to say that some people could take this as threatening suicide or self-harm, but in my case, and maybe others it is not. It is simply thinking allowed or asking for help at a difficult time. But I do agree that if someone threatens suicide or self-harm because you wont do something for them is a bad sign.

Just wanted to share this.