What does it mean when a guy lets a girl walk in front of him?

Usually whenever we'd met up, I'd walk up to him and we'd walk side by side. This time, he let me walk in front of him. I wasn't walking fast or anything, but I slowed down and sort of stopped and waited for him to come up and walk beside me, which he did. He wasn't even far away from me either as I had waited for him. There weren't any other people around, it was just us. Why did he let me walk ahead at first?
What does it mean when a guy lets a girl walk in front of him?
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