This is a lot to unpack! First, congratulations on the amazing sex!

Second, and less fun, what do you want from your relationship with Christian Gray? If it’s no strings attached fun, at your age and given situation with your (ex-)boyfriend, I’d say go for it since he sounds like a fantastic sexual partner who cares about your pleasure.

If you want a serious relationship, how compatible are the two of you outside of the bedroom? Do you have similar interests, hobbies, etc.? How comfortable are you with his milieu and his social circles?

He sounds like he has quite a bit more life experience than you, and that, coupled with his financial independence, inherently gives him relatively more power than you in this relationship. There’s a line from Grey’s Anatomy - “He’s very dreamy, but he’s not the sun, you are.”