My (f19) boyfriend (m19) is too insecure to party

r/

I decided to throw a little party this weekend with my work friends. Just a family friendly party nothing crazy. This is the first time I ever get to throw a party because I never had enough friends to do so. Im really excited to host and have fun, but my boyfriend is making it about himself. I asked him, “hey will you come over this weekend to help with my party?” And he immediately came off as insecure. “I don’t know any of them. They’re not gonna like me. I’m gonna be anxious.” Then after comforting him, he’s saying things like “im gonna come but im not gonna have fun. I’m not gonna talk to anyone. I’m gonna stay in your room half the time.”.

I feel like im dating a toddler. Never said anything like “oh how exciting. What’re you gonna cook? What can I help with?”. And this isn’t the first time he acts like this. It’s 24/7. I figure to myself, I just need to help him not be insecure right? But it’s not like im doing anything to make him insecure. And I reassure him as much as humanly possible. It’s getting exhausting how much I have to coddle him and watch what I say/do.

How can I fix this? How can I bring this up to him without hurting his feelings?

(Please, do not say end the relationship, he is more than this to me, this is just a small hiccup in our relationship.)