He Wants it to be "Romantic"

Rachael
I'm 21 years old and my boyfriend is 25. Everyone says I'm crazy to be wanting a baby so bad so young, but I just can't help it! I had a miscarriage 2 years ago with a different SO, and my bf has a six year old son from a previous relationship. 
We both want kids and soon. However, I love to plan, and he absolutely hates it. He wants to get pregnant but wants it to be a surprise when it happens. This totally frustrates me because when it comes to a baby, there is so much that needs to be done and figured out!
Has anyone else had a SO who felt the same way? If so, any advice?