Im a tad bit confused about what you mean so my response may be off but....

I often have dreams were I am with a girl[in a nonsexual way], I feel warmth and a whole slew of new feelings that I imagine are simliar to those in a serious relationship. After these dream I wake up with similiar feeling of emptyness. If you are having some social issues I would think that these dreams area a manifestation of your longing to belong to a group.

Just my two cents, if you want some more in depth help feel free to pm me.