What do you think?

So my bf has always been very overprotective and possessive of me which I think is adorable and he's always been kind of assertive in bed. Well this all adds up because he recently told me that he's been in full on dom sub relationships before and that he wants me to be his sub. I was talking with him for soo long about this and asking a million questions about what this would all entail and such. He said he's done both and prefers to be in a dom sub relationship only in the bedroom and just have a normal healthy balance of him being dominant and me being dominant in his day to day life. This definitely made me feel batter about it but I'm still unsure. What do you lady's think? Should I agree to this? Would you? If you've ever been a dom or sub what was it like for you or your sub? If you have any questions just comment and I'll try to answer everything