A friend of mine asked an interesting question today:
If sexual frustration is need for sex and romantic frustration is need for romance, what is need for friendship?
Note: To be clear, this is saying Sexual Frustration is the want/need for sex, and Romantic frustration is the want/need for romance, not that they are the same thing.
And I can't come up with a good answer for that. "Loneliness" was suggested, but that's not quite specific to needing a friend, so much as needing anybody at all. And "socially frustrated" doesn't quite work either, because it implies being in a larger social group when that is not necessarily desired.
So, what term would better describe badly needing a friend?