Welcome to Zity, Junebug (*very* cute name, that, by the way). I, and I really am sure that I speak for others here too, welcome you, and hope to be as helpful and supportive as possible. We are glad that you have a successful, somewhat, long-distance, relationship. Not everyone here can find even a fraction of the joy, fulfillment and healing that you have already shared here.
I felt the same way about my wife, as you do about your boyfriend, when we were playing a lot. She did expand our play to D/S, without having heard of it, but I couldn't get her to be as involved as you want your boyfriend to be with you, Junebug. With that in mind, some folks may not have a personality that goes so far in domination as you might like. For some of us (certainly not all) the conflict between domination, and the feelings of respect and loving tenderness may be too great to overcome without a very stressful inner conflict. Many, if not most, of us here, have to settle for less than you already have.
We are glad for you that you have as much as you do. There will likely be conflict for you, as you 'settle' for less domination than you want, as your boyfriend stresses over trying to provide as much domination as you would like. Perhaps it can be a bonding experience for each of you to realize that you both are having to resolve stressful inner conflict to meet each other part way in expressing your mutual love through intimate play.