I wish someone here could give you an answer to your question, but none of us are qualified to diagnose him, or to tell you if it was real, or to assure you that he loved you and it meant more to him than he was able to express. I really, really wish that, but it is not possible.
In general, yes. Addicts can be abusers. Abusers can be addicts. There is no quanitifiable formula for human beings.
What I can tell you about your situation specifically is that letting go is a process and not an event. Deliberately turning my focus away from what others' might think of me or feel for me, and towards what I thought of and felt for myself is where the process really began for me.