He avoids the 'us' conversation. What does it mean?

When a conversation repeatedly does not happen, the question stays unresolved. Avoiding the topic cannot tell you what conclusion he has reached privately. It does show that you have not yet been able to discuss something that matters to you.

A specific time to return to it makes the next step concrete. If that time also passes, you can decide whether continued uncertainty works for you without turning it into a diagnosis of him or taking responsibility for both sides of the conversation.