Hyphenated names

How do you tell your SO that you intend to hyphenate your name once married? He said my name using his last name last night but there is no doubt I’ll be hyphenating with my maiden name. Mostly because I have children from a previous relationship that have my maiden name. I had to fight to get that name added to their dad’s last name just a few years ago so changing their names again would be out of the question.

How do I tell him this without hurting his feelings? I don’t want him to feel like I’m putting up a barrier to being fully his but neither will I exclude my children.