My boyfriend is kind of insecure?

So my boyfriend is kind of insecure, but not in the physical way.

All day today, he seemed a little distant. Now, I know my boyfriend. It’s never on purpose. He does this thing where he overthinks to the point that it festers so violently and ends up biting him in the ass. He doesn’t really open up and talk about what’s going on in his mind.

So today, I confronted him about it (it’s the only way to get to him) and made him talk about it w/ me.

He basically said he can’t stop thinking about how I deserve better. He has it in his mind that he has to keep me entertained or do something amazing for me. He’s not very talkative, and he thinks it bothers me. I explained to him that I talk enough for the both of us (I really do) and that my own voice entertains me, and he doesn’t have to fill the empty spaces with his if he doesn’t want to. He still thinks I deserve more, someone more spontaneous and outgoing. He doesn’t understand that he alone IS MORE.

I spent a lifetime with abusive assholes. He literally is more because he does anything and everything for me, and treats me like a queen. More than I could’ve ever imagined.

We worked it out but I have a feeling this won’t be the last time he becomes insecure about himself in this way. Does anyone have any suggestions on what I can do to help him understand that he doesn’t need to feel like he has to feel obligated to do any fancy things for me to keep me around?