Or maybe try to seek better mental health resources through some means whatsoever, instead of relying on an app to find someone as mentally vulnerable as you.

Two suicidal people dating each other? I'm struggling to imagine how this could be a good idea.

Honestly, I don't see relationships as any kind of solution to suicidal ideation. Even when only one of the partners is not suicidal, the relationship has a good chance of ending very badly for both of them.

People who are suicidal need a therapist, not a date.