If the personal items such as furniture and appliances were given to the marriage then they would be considered marital assets. The items bought during the marriage would of course be marital assets.
I was in the same position when my x and I split up…all of MY stuff was gone. The only thing positive was that he did feel guilty enough to help me get an apartment and to replace the furniture that I had gotten rid of prior to us living together.
As far as you giving up things, I assume that you mean you are in the marital home and he wants his personal items and items he brought into the marriage out of the home? You are correct, you do not have to give up anything until ED is established unless there is an agreement. Have him get a separation agreement and have it name items that he believes are his. If you do not agree to what is listed, then change it.
My husband’s ex mother-in-law left her husband and took all of his stuff with her. She left quite a bit of her stuff with her and what she didn’t take with her wasn’t worth much. He had to get a court order to get things back from her, like his shoes, clothes, even his toothbrush…
You are married so everything that either of you have belongs to the other legally. You each have your personal items like clothes and stuff but legally it all belongs to you both. The one that has possession at the time of separation is the one that has all the bargaining chips.
This is often the same with the children…if the children are with one parent primarily during the separation it sets a standard that could be followed when custody is filed for.