Yeah... and don't wish for him to have been jealous. Jealousy will limit your options and can break you apart. Openess creates opportunities, to share, to have different interests and friends, to communicate.

I suggest, if he seemed interested but you're not sure in what exactly... that you try taking vanilla activities to bdsm style venues. For example, if he (clearly) likes the fucking, how about teaching him about safe words and then tell him to use you anyway he wants, harder and harder, any oriface, until and unless you use the word.

Wrestle. He wins when he enters you and fucks you for five minutes while you resist... You win if you can keep him off and out for 30 minutes.

Do a role play. Try something that requires he discipline you over his knee or with a paddle. Or find a play with an appropriate scene, and rehearse.

Then come back and tell us all about it, the results, and we'll all figure out where to go from there.