A Pillow Partner is a large, comfy, sink-into pillow in one's bed, that will substitute for a real boyfriend/girlfriend when one can not get that person of your dreams. A person can fantasize, hug, kiss and cuddle with his/her Pillow Partner when the real "one" isn't there. It satisfies the desire to hug and cuddle with someone.
The man I truly love is unavailable, so I hug my Pillow Partner every night as I go to sleep, and I fantasize that it's really him that I'm hugging to sleep.
Someone you sit next to in an orchestral setting. These relationships often extend beyond a musical friendship and often can be confused with a more intimate relationship. It is not uncommon for stand partners to share a bed, participate in couples yoga, share food, and cuddle.