Ladies i want your opinion.. Nudes?

So this guy is my First and surely the last one. We started dating about Five years back and got engaged about a year ago.He is an amazing guy and respects me a lot. His love for me is pure and i have always seen it from our childhood. We still have a few years to get married and here i am facing a situation and i am not sure how it react on it :upset: So basically he was turned on a couple of days ago and wanted me to send him Nudes.. I told him i am insecure of my body and the next second he said its alright baby i understand. But after that i am feeling too bad like he is going to be my hubby and he has a right but i don't know why i am hesitant. I trust him completely he is a Gem! I didn't want to make him feel bad and he will feel that i don't trust him when i actually do. I explained that i want to keep it for our marriage so it can be more exciting for the both of us. How do you guy see it?? I am confused and want him to feel good and the special thing is he want to see his women only he hates watching porn or something nasty he believe its unfair to me which i love :D So how should i be dealing with this? What should i do? i want him to be happy but at the same time i am confused. I want you guys to help me on it! :D