I think I would sit on this latest drama for a while. He's not a happy camper about not getting the attention for purchasing the landline. The bike was what your son wanted. He thinks he can't do anything right and no one appreciates his efforts. He's frustrated as heck.
I do think he's not a happy camper and he's really trying to push your buttons over everything. So, he can't see the forest for the trees because he's not thinking rationally, but emotionally at the moment. He thinks that you are at fault for the world spinning. You had no control over the repairman putting his card in your phone as well as no control over an additional person joining you and your sister and her boyfriend for dinner. You would be been rude to have said anything about the friend joining you.
As for making him look silly in front of your family when they came to visit, well that was all on him. He's tried so many things to get you to explode and say something that would help justify him leaving and yet, you haven't. He's frustrated and he doesn't know what to do.
Here's my advice...do nothing for now. Allow him to fume for a while and when things have calmed down, I would arrange a meeting w/him to discuss w/him as to what he thinks a friendship looks like. Friends do not treat friends the way he has. Friends do not talk to friends the way he has. HaWho, you may not reach him w/words, but you can w/actions. Can you treat him as a friend?
When in doubt, do nothing...sit quietly and the answers will come. BTW, I'm sorry he's off the rails again. I do hope that you have a nice weekend.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
