tjr1243 wrote:
There is no way to know,
That's not true. There are many, many ways to know. The fact that we're blind to these things doesn't mean everyone in our place wouldn't know either.
When someone says they "forgot" to invite you, the appropriate response is to treat them exactly the same way from now on, i.e. ignore them and be phonily polite to them when in the presence of others. Anything else would be dangerously making yourself an easy target for future additional aggression. Because yes, it's an aggression, a way of saying "keep away from me!".
I once had what I thought was a very close friend, and I thought I was a very close friend of his. One day I was talking to him on the phone and couldn't hear him well due to the loud music, so I asked him to turn down the volume of the radio. He said his room mate wouldn't agree, it was the room mate's radio. A couple weeks later when I happened to be visiting at his house, his room mate told me he was disappointed I hadn't come to my friend's huge birthday party. Turned out that night it wasn't a radio playing but party music. My friend tried to patch things up between us but I never agreed.
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There are two means of refuge from the miseries of life: music and cats - Albert Schweitzer