<human>: We've been together for 5 months and it's pretty serious.

Is there anything I can say to try and make him feel more comfortable about this? He's insecure about it, he feels like I want more and he can't give it to me. 

All I did was tell him. I didn't ask if I could, I didn't do anything other than tell him I would /like/ to sleep with a woman one day. That is literally the only thing that I said, and he's panicking.

And I'm shit with words and everything is coming out wrong. How do I explain to him that this is not about him not being good enough? He's amazing and I love him and now I've made him insecure and I don't know what to say.

Can you give me a shortened version of the text?
<bot>: My boyfriend is insecure because I want to sleep with a woman and I don't know how to make him feel better.