How to help bf with long-term memory loss

So I learned today that my boyfriend has long-term memory loss due to a really bad head injury at 16 years old. This explains a lot of why he can't remember much about how we met, etc.

I'm hoping that this relationship leads to a life-long marriage complete with children, but I'm worried about him not being able to share the memories of our wedding/children/etc.

I could keep a scrapbook of all the important things and update it through the years, but that feels so....awkward? Idk.

Does anyone have any ideas or has dealt with this themselves?