<human>: Friend A and I had been friends since 3rd grade. Neither of us had a ton of other friends, and we mostly hung out together or with our 4-6 other mutual friends. We practically did everything together. 

Fast forward to after college, I am happily married and have a career that I love. Friend A has yet to do much of anything with his life post-college. In fact, he continues to hang out with current students he meets while still working in university food court. 

I do my best to continue hanging out with Friend, and we get together often. However, he often invites new college friends along. This doesn't bother me in the least, and I meet some pretty cool people in the process. This continues for a year or two when a mutual friend casually mentions that Friend A has set a final date for moving to Arizona (leaving Indiana).
...
...
WTF!

I was totally caught off guard with this information that my best friend for the last 18 years was moving across the country and hadn't bothered to tell me. To make matters worse, I find out he had been planning the move for nearly a year. Never. Once. Mentioned.

I ask Friend about it, and he says he must have "forgotten" to tell me. Whatever, I let it go since he's leaving in a week, and I'm not the type to dwell on negative stuff. We plan a final night to hang out the day before he leaves.

I show up on said night with nearly $150 of comics for his long drive (we're both big fans and his dad was driving). I anticipate a night of reminiscing and good times. That did not happen. After about 10 minutes, there's a knock on his apartment door. Girl enters (not attractive). Friend introduces me to person he met at work 3 days ago. He says they're going to grab something to eat and thanks for coming by. Again, WTF. Not even an invite to go with them?

Needless to say, we haven't talked much since then.

Could you distill the essence of the text into 1-3 sentences?
<bot>: Best friend didn't tell me he was moving across the country and bailed on final get together after 10 minutes for girl he had known for 3 days.