I had sex with a man 10 years older than me in the back of his car

"What is something you never thought you would ever do?" Is a question I have never been able to answer properly up until now, I have never done anything out of the ordinary. Until now. Yesterday I got into a car belonging to a guy I met on Grindr, he was 10 years older than me. I had never even kissed anyone previously, he made out with me and blew me. I do not know how I feel about what I did. I feel like I should feel like I a slut. I feel empty, I am frightened that if I am to ever find someone who I could be with romantically I am sort of ruined. I had sex with a man 10 years older than me for fucks sake. Can someone wiser than myself tell me what they think about what I did, I just needed to tell someone so I figured I would tell you guys. I apologize if this is the wrong place to post this stuff.