boyfriend insecurities

So I started dating the most perfect guy ever, seriously, it's stupid how perfect he is. We're committed and monogamous and he's absolutely in love with me, but he's way more sexually experienced than me. He's had multiple threesomes, doesn't want me to know how many women he's slept with, has even been paid to be a sex toy for a weekend by a much older woman and has slept with most of his female friends at some point or another. It makes me feel incredibly insecure and insignificant and inadequate. He told me not to worry and that I'm the most perfect woman ever and no one else can compare, but I still feel like shit.