Just that, really!
I felt really lucky that we had no first name naming issues - DH loved the names I put forward for our children, and let me have my first choice for both. I had my heart set on two middle names for each of them, but he is from a custom of no middle names, so felt one middle name was enough of a stretch. He chose one each from my choice of two, and I didn't push the second extra name as I felt very lucky he'd agreed to both my first name choice and one of my favourites for the one middle.
His brother's wife just had a baby and they are chatting, and he and SIL can't agree on a name, and DH says "so lucky we didn't have this drama" - and I said, "well, you didn't let me have the second middle names" - and he said, "oh, I didn't really mind - you could have."
I know this sounds daft but I feel really gutted. :(
Shall I give my head a wobble, or can I add a second middle name after all? Will it look stupid on their official documents? Are there any repercussions I need to consider?