This is why we must remove any and all stigmas associated with mental health.
Things are getting better and more people are speaking out but it's still hard, too hard.
You may have only "met" someone on the web and "known" them (or at least an aspect of them) for less than a year but it still hurts to see someone suffer, to see them have to cut themselves off from human interaction in order to survive.
We have to be there for each other but have to wait for an approach. We can't assume we know what someone is going through as everyone's experience, everyone's pain is different.
We just have to make it easier for them to reach out if they need to.