Was it a bad idea to tell the person I’m texting about my biggest insecurity?

So, I've(19F) been texting a guy(20M) who I met on a dating website for about a month now and because of the pandemic, we haven't been able to meet and he brough up the discussion of really wanting to meet me in real life. My biggest insecurity is my body and I've been trying to improve it ever since I've gotten out of high school and have successfully lost 30 pounds, yet the insecurity doesn't fade. I ended up telling him how I was afraid to meet him in person because I wouldn't be sure if he'll still be interested in me. He said he'll look like a total douche if he were to stop texting me because of my body and still likes me either way. I really don't like to talk about my insecurities with my potential significant other too soon but I felt the need to tell him for some reason. Was this a good or bad idea?