My boyfriend gave me a key, then got upset when I used it without asking first

My boyfriend gave me a key to his apartment three months ago. He put it on a bright blue key ring and said, ‘Now you don’t have to wait in the hallway when I’m running late.’

I understood that as more than a solution to a slow elevator. We had been together for almost a year, and the key felt like a small step toward sharing a life. I did not start appearing at random. I used it when we already had plans or when he asked me to feed his cat.

Last Wednesday, I finished work early. We were supposed to cook at his place at seven, and I got there around six fifteen. He had texted that he was leaving the gym, so I let myself in, changed out of my work clothes and started chopping onions.

He walked in and looked startled. Then he asked why I had not told him I was there.

I said I thought the point of the key was that I could come in. He said the point was that I could enter when he knew I was coming, not treat his apartment like it was already ours.

That sentence embarrassed both of us.

He apologized for the wording and said he likes having some warning before anyone enters his space. He grew up in a house where relatives walked in constantly, and the sound of a lock turning when he is not expecting it still makes him tense. I believe him. He is private about his home in ways that have never seemed suspicious.

But I also felt foolish. I had been carrying the key as evidence that our relationship had reached a new level. To him, it was apparently a very convenient door-opening tool with a notification requirement.

I asked what would happen if I arrived while he was in the shower or asleep. He said a text was enough; he did not need permission, only notice. That sounds reasonable when he explains it calmly. What bothers me is that we never discussed the rule until I broke it.

Since then I have stopped using the key unless he specifically asks. Now he thinks I am making a point. Maybe I am. Taking it out of my bag and waiting outside feels ridiculous, but using it makes me worry I am claiming a home he has told me is not mine.

He says I am turning a boundary about surprise entry into a verdict on our commitment. I think the key carried a meaning he was happy to let me assume until the meanings collided.

Would you treat ‘text before using the key’ as an ordinary privacy preference, or is it fair to ask why he gave me access before he was comfortable with what access usually implies?