He said I've met his family and friends by "default." What does this mean?

Does this mean that he never really intended for me to meet them or it just happened and he's happy either way?

The first time I met his friend, he invited him to have some food with us in a restaurant. The first timeI met all of his friends, I was staying at his and they'd asked if they could come over for some beers. He asked me if it was okay (I said it was fine) and he brought them round. He'd told them about me, and were pleased to meet me. I met his parents when I went with him to drop some stuff over at their house. Whilst there, they invited me to a family meal.
He said I've met his family and friends by "default." What does this mean?
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