An empty bed is read as absence and longing — someone missing, or a part of you not at rest. Dream books treat it as an image of feeling, not as news about anyone.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.