I agree with Tom, he sounds like he may be a bit too much work for you.

I can't give you any solid advice to your problem, but I would not attempt to further pursue a relationship with this Dominant.

I just notced icey has posted and she offers up excellent advice as well, but do take your time and find the right person to compliment you.

Finding a good Dominant takes time and effort. You should allow yourself to get to know the other person on a more personal level before you jump into the D/s aspect of it.

As for the constant cravings, I know that feeling only too well. I have been there, and am still there most days.
There is another site linked to this one. The BDSM Academy. It is a place that offers BDSM related tasks.
I find it a good place to ease up on some of the cravings and to get to know yourself better as well.