I think you bring up an important point:
But I would be careful about falling in love with another on this site. We're so unpredictable, us survivors.
I think we all know that managing any kind of engagement with another person requires emotional resources and strength. Even just a casual friendship with the guy down the street, or a pal at the gym, can be trying at times.
The anonymity of the Internet encourages us to say more about ourselves here, and the more we reveal and the more we engage with someone the more risk there is. Of course that risk can pay off. Reaching out to each other can be a very healing and encouraging experience. I know that so many of the gains I made in real life were things I tried out here first and gained enough confidence to convince myself they would work in "the real world" too.
I think the key question here is boundaries. How far can you go with someone here and still maintain a safe relationship? Most of us have never met and don't even know where the other guy lives, or even if he really is who he says he is. To what extent should we get our own life entangled in that of someone else, when the other person is also struggling with recovery issues? How far can we "be there" for someone else when we ourselves often feel so lost? Is our feeling of closeness coming from a genuine engagement with the other person, or could it be that we are just so accustomed to feeling bad and alone that any relief seems to be incredibly special? How will we feel if a close friend just suddenly disappears from the site, for whatever good reasons of his own?
We will all answer these questions differently, but it's vital to bear in mind that our first priority should be our own recovery. Reaching out to others is important to both sides and of course it's what makes us a community. But it's vital to have in mind our own needs and concerns and to make sure we aren't taking risks that could cause us a lot of harm.