Emz,
Percy has a good point re this person living next door. I would talk this over with your therapist if you still have one.
I feel like you must have some PTSD sx from your abusive relationship in the past and I would like to suggest that you attempt to deal with those head on and that is where a professional could guide you.
Relationships take a lot of time and energy to maintain. Go very slow and do not push yourself into something you feel you should do. You may feel lonely at the time, but it's not smart to fill that loneliness with another man right away. REading back over your post you need to make sure you are healed and if you do date, keep it casual until your sure you are comfortable.
My heart goes out to you but I am so glad you have come so very far.
Merry Christmas
Kitt