James Parks wrote:

Loneliness of spirit is really a void within ourselves, a hollowness that cannot be filled with other people—no matter how close, warm, & fulfilling our relationships might be. The yearning we feel is real; it comes from the depths of our selves. But love is not the answer to this existential yearning. Fusing with another person will not solve all our problems. If our real problem is our Existential Malaise—felt as loneliness—even the most ideal loving relationship will not fill this aching void.

I hope you find the help you need. Good luck.