[Serious] Who did you trust completely only to have them betray you?

My best friend since first year of high school "Mike". We've been best friend for the better part of a decade. Like peas in a pod. If you saw one of us somewhere, you could be guaranteed that the other one was near.

Until Canada day, 2008. We usually spent the 1st of July together, but he's been invited to a party with his new boyfriend and I had a "maybe" kinda plan with a guy I was seeing. Come noon, I get a text from Mike, saying they decided to not go to the party anymore, so if I want to come and chill at his place before heading out for the fireworks, I'm more than welcome. I still haven't heard from that guy I'm seeing so I said fuck it and drives to Mike's place. Mike lived in the city, I lived in the country so it's a 45min ride.

I get there, we smoke a bowl or two then heads out to buy beer. We come back with our beer, smoke a bit more, start drinking and playing video games, waiting for Mike's boyfriend "Jake" to get off work at 5PM. When Jake comes in Mike and I are already drunk. Jake politely smiled at me and signalled to Mike to follow him in the bedroom but you could see he was angry/confused. I decide to give them some space, I think maybe they had a previous argument or something, so I got outside on the deck to get a smoke. The windows are open, I can clearly ear them talking in the bedroom.

Jake ask Mike what the fuck I'm doing here. Mike answered that he was bored this afternoon so he told me to come over so he could have company. Jake then ask him if he remembered about the "super exclusive party" they've been invited too, said party where they were explicitly told to NOT BRING ME. Mike said yes, they are still going obviously. He'll just tell me he forgot about the party and leave me on my own....

Which he proceed to do. Mike came outside and just told me "yeah, I forgot we had another party planned tonight, so if you want you can stay here for the evening, wait for the pot and alcohol to wear down if you want. We'll be back sometime next day with some other friends so if you could be gone by then that would be great". Then went inside to take a shower.

Jake was so embarrassed by Mike's behavior. He came outside to apologized. He said he didn't know why Mike did it, since the party has been planned for nearly a month. He offered to pay for a taxi if I wanted to go back home. I refused his money, they were already broke AF. He insisted I take their weed stash, both as an apology for me and a punishment for him... so I did. I ended walking 1h to another friend's place. Next morning I took the bus to Mike's place to pick up my car.

This was the last time I've heard of Mike. I tried calling him, texting him, nothing. Then one day he added me on Facebook, but never spoke to me.

Weirdly enough, last year I got back in touch with an old friend who was also friend with Mike. She asked me if I saw him recently. I told him what happened in 2008. She was shocked ! She said she occasionally hang out with him as late as 2012 and he never ever mentioned this to her. When someone would ask about me, he would just answer : oh, it's been a while I didn't see her, I guess she's pretty busy with school and work.

/r/AskReddit Thread