Elizabeth93, If he’s a true introvert, then it will never be natural to initiate because he does not naturally do that. He can, but it will always be effort. Those of us who express freely and are very transparent do not understand those that don’t and can’t figure out why you can’t just speak up. So knowing for certain how he’s built will open up understanding to whether or not he is even able to meet the expectation you’re expressing. It’s valid to want this communication to improve and you feel like he’s just shunning you and using silence against you.
That may not be the case.