19 F and 65 M ADVICE PLS

So about two months ago I hooked up with this man but all I knew about him was that he was older than me. We matched on a dating app that I later deleted so I had hesitated to contact him because of his age and everything (because I thought he’d say I’m too young)but I was interested in him and he was just visiting my country and leaving the afternoon after the morning we agreed to meet. He was very sweet and before we met he asked me if I had any boundaries that I didn’t want crossed etc and then the next day we met up and we hooked up and that was honestly the best sex I’ve ever had in my life.

We’ve kept in touch to this day but I’m scared that it altered my brain chemistry in a way because obviously I’d been dealing with boys within my age range thus far but that made me realize I’m into older men at the same time the fear of getting rejected by them is still very prevalent. It’s like a feeling of I know he was okay with it and I had a great time but I don’t think I’ll ever find someone else who’ll be okay with that because I’m really young and I recently got rejected by a guy who was in his 40s (which is fine because he said the youngest he goes is 22) but it kind of reinforced that fear that I have

I don’t know please share your thoughts/experiences