I dreamed someone invited me to a house party but then I asked them their address and they said they were homeless.

The person who invited you to their house party is an agent of desire, promising excitement and giddy memories, and the transition to their homelessness is your recognition that your real life responsibilities are more important to you and that many need your help, even if they claim to be doing fine. You will wake enlightened and donate all your earthly possessions to the needy and just walk the Earth on adventures helping random people like Batman but not as cool