Hi Connie,
I’m not sure if I’ve said before but I’ve been in your position, so know how you feel.
What you need to realise is that you will probably never know his thoughts, feelings or why he is actioning the way he is. You need to stop trying to find the answers by questioning him & the situation. You’ll drive yourself mad, if you haven’t already! He probably doesn’t want to completely let go of the fact you two have ended, & holding onto your stuff is the perfect way to keep you in his life, even if not directly. Once you have collected your stuff you’d have no reason to contact him, which he may not like the thought of. This is also a bit of control on his part, you may only get the stuff when HE gives you permission to do so.
Can I ask what the stuff is?