Hi.
First and foremost congratulations on getting out of a negative abusive relationship and deciding to honour yourself…could not have been an easy thing.
It sounds as though you are still very raw from the past abuse, and understandably very tentative about making new ties. I don't think it's nessessary to lay yourself bare to this new romantic interest, maybe keep it casual and simply ask him out for coffee or lunch and take it from there. There are many lovely potential partners out there, take your time and enjoy the journey.