Submissive Boyfriend

I started dating this guy 2 months ago and physically things are going very well. He recently opened up to me saying he wants to be sexually submissive at times and that he has a kink for wanting to be used. While I'm super grateful he opened up to me, I don't know how to respond to what he wants and I genuinely want to make him feel good cause he always makes me come multiple times. Please help me out with this :)