Surely, he didn't want you to call him Shirley.

You're only ever meant to use his name when addressing a 3rd person, you're supposed to be using a pet name for him. Don't know if it's something to get angry about but using his actual name is like middle naming a kid.

sometimes people snap at stupid little things when there are very big things left unsaid or rising resentment peaks, hopefully life gets better and clear honest communication is happening between your 2.

my husband has done the same. its like what, am I not allowed to use your name?

It's because when you're significant other calls you by your first name instead of your pet name many assume that they're in trouble for something.

My girlfriend and I almost never use each other’s real names unless we’re being serious or we’re really mad. If you called him by his actual name when you never do that and he didn’t do anything to warrant it, I can understand why he’s mad.