I’m worried he ruined sex for me…

I was with my ex for almost two years in total, and he learned literally e v e r y t h i n g about my body and what i liked. he learned things about me sexually that i wasn’t even aware of, and just changed the way i see sex entirely. i have been with a few people since we broke up, but i keep finding myself wishing it were him instead because no one makes me feel even a fraction of what he did. i know these kinds of things come with time, but i feel like he was just absolutely perfect for me. it felt like our bodies were made for each other. he’s been gone for awhile now and he’s still the only thing im thinking of and im afraid that i’ll never have sex like that again. he was very, very experienced and being with anyone else is just so underwhelming. i feel really shitty comparing sexual experiences to ones i had with him, but it feels impossible not to.