Out of sight, out of mind: the story of my life (or that's the way it seems)

Last week I came to a disturbing realization. It seems to me that as soon as I have left the presence of my friends, or shortly thereafter, they have a tendency to forget that I exist. When I try to contact them, they don't reciprocate my attempts to keep our friendship alive. I suppose there's probably a logical explanation for it but I can't help but wonder at how little effort it takes these days to keep in touch with friends and yet people don't do it. There are of course exceptions to this and perhaps I should just be grateful for that. On the other hand, some of those friendships which have seemingly fallen by the wayside were those that I cherished most. It's always hardest when I need a friend but can't find one to whom I can turn. I suppose I probably don't have much room to complain about this. It's entirely possible that at some point I've been the one who has forgotten a friend who has tried to reach out to me. I hope that's not the case but I can't be too sure. Eventually, if my attempts at contact go unanswered I begin to fear that I'm just being a nuisance and I stop trying. It's very upsetting to me to realize how often this happens. I suppose that perhaps I get attached far too easily for my own good...