My boyfriend saw me without makeup for the first time 😬

i’m insecure even with makeup on and my boyfriend knows about it because i’m constantly calling myself ugly. Tonight, my boyfriend was over and decided that he wanted to see me without make up for the first time. He’s always telling me how i don’t need makeup to look pretty and he’s always really complimenting. When i was taking off my makeup, he called me beautiful but i couldn’t tell if he was being honest or not. He kept on saying how beautiful i looked but it seemed really insincere. His body language became quite distant which isn’t what it’s like normally when i have makeup on. I’m scared that he doesn’t like me anymore and was wondering if anyone has been through something similar to help me feel less alone. TIA.