Ask HN: What should I do as a forever alone software engineer?

I don't really know how to form any sort of relationship with a girl. I've tried dating sites with little luck, and even when I meet someone I have trouble forming any sort of connection. I desperately long for some sort of emotional intimacy with someone. I feel existentially lonely, and sometimes I can't even function and get trapped in depression.

I've tried meditation, some therapy, and other things, but I never seem to go beyond this. I've tried to just focus on programming and ignore my other troubles, but that only works for a time. How can I move beyond this?