May I suggest that you gather your thoughts and concerns. Write them down. Make sure you address every concern. Try keeping questions short and direct, jot down answers, be open to his possible objections and be clear with yours.

Sounds like there is a lot of history here and though the relationship may have changed the friendship hasn't. Talk to him. Make sure you are rested, have taken your meds and have eaten and same goes for him before you talk. Clear cut questions will bring clear cut answers.

Do you love me?
Do you want to try this relationship again?

Take care of yourself and your heart. You may be still volunerable and may trigger easy, so make sure you are up to it and in a good place mentally. Be prepared for the unespected both good and or bad. Have a plan for your well being (living arrangements, shelter, support).

I personally think he likes/loves you still and doesn't want you to go or he would have taken measures to remove you from his home. Not knowing where you are in the "relationship" maybe what is most disturbing, especially if you are unable to tell from conversations, body language. Just sit down and talk with him.