Dreams about ex-partners can often reflect unresolved feelings or thoughts about the relationship. In your dream, being in the same house as your ex-boyfriend may symbolize nostalgia or a desire to revisit past emotions. His insistence on staying home while you prepare for work could represent a feeling of being tethered to that past relationship or unresolved issues.

The plates of different kinds of food you encountered every time you opened a door might signify abundance, comfort, or the various aspects of your life that you're currently exploring or wish to nurture. Food in dreams often represents emotional sustenance or the things that fulfill you.

Overall, this dream may suggest that you are processing your feelings about the past while also preparing for your future. It could be a reminder to nourish yourself emotionally and to reflect on what you truly want moving forward. Consider what aspects of your past relationship you might still be holding onto and how they affect your current life.

Reflect on your feelings about the relationship and think about what you might need to move on or what fulfillment looks like for you now.