Hooked up

This weekend I went out on a first date with a guy I met online. We had a great time and for the first time ever in my life, I was down to hook up on the first date. Throughout the date, i knew he wasn’t compatible with me tho. Our values and personalities are very different. He’s very carefree, and blunt and sort of an asshole honestly. but I was having a good time and thought hey why not? I’ve always been pretty uptight and conservative when it comes to this stuff, and I’ve been itching to have fun and just live a little. So We went back to his place and had sex. At the end of the night we said goodbye and he said we’d talk later. I told him to take care. He texted me the next morning saying he had a great time and that we should do it again soon. I relied and said for sure. After thinking more about it, I don’t want to seriously date or catch any feelings for him at all. I’d be down to date casually every now and then, but I don’t know how to make this clear? I don’t want to hurt him bc I think he actually really liked me. And I’m also thinking maybe I shouldn’t even try going out with him again. What’s the point? Ugh any advice would be helpful. I know I sound like a horrible person. I’m sorry. But at this point in my life, all I’m seeking is a little fun and adventure, and no commitments.