Happy New Year to you.
If I knew my partner was seriously thinking of going to Australia I would ask my self three questions
Is this a serious plan or just thoughts about doing it?
Why does he want to do it?
Does it include me or not?
Depending on the answers I would then know where I stand. From what you have said. It does sound like he plays his cards close tohis chest and doesn’t discuss very personal things with you. I may be completely wrong and forgive me if I am wrong. What makes you think this is a serious plan?
And no, it does t make you clingy at all. If his plans do not include you then you need to know surely.
I have observed sometimes in life that when one partner is very into the other, the other can withdraw a bit. It is just the nature of the power balance between two people. Don’t ask me why, it is just the fine balance of things. I do think you need to discuss it with him though. It is kind of important to the both of you. It is just my view.