Feeling joy at another person’s happiness, even when it does not include you, is read as a generous heart. In dreams it often marks a love that has stopped needing to own.
Has this come up in your dreams before? What was going on in your life then?
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.