I struggle to define that, so I asked them to respond in their own words:

Friend 1 - "Because you support us, too."

Friend 2 - "In the very beginning, it was your expressiveness (paired with kindness) that made me want to be your friend- you were fearless where I was very private.

Over the years you have proven to be patient, respectful, and enthusiastically supportive. You understand and accept us, despite our flaws.

I feel safe being myself around you because you do right by others and are worthy of trust."

Friend 1 - "Well said. Can't add much to that."