I wonder if you could talk to him alone or with his wife present, and tell him that you think something is wrong, that you get the feeling he is avoiding you and that you want to clear the air about it.

It sounds hard if you aren't used to doing this, but it will relieve all of the guessing and wondering and deciding what's real before having all of the facts.

Not knowing is very anxiety-provoking. When you know what is going on, then you can decide where to go from there. You don't have to do anything right then, you don't have to do anything until you have heard what he/they have to say and take all the time you need to consider it and how you feel about it.

Does that sound like something you could do?