Someone you considered a VERY good friend suddenly crews you over big time. How would you feel if they told you they are out of the country for business and the tickets for a special live event you both really wanted to attend are too expensive for them anyways so they have decided not to go, just so you later (when you go to the event by yourself) accidentally see them there, sitting in the front row, even gotten themselves a backstage pass somehow etc. You realize they have lied to you and have intentionally been avoiding your calls/messages the last couple of days just so they wouldn't include you in their arrangements, or have to lie to you again. You, on the other hand, were ready (and have offered) to buy them the ticket and would have done anything to go together. But your friend probably prays to God you wouldn't even make it to the event so later they can make up a story about how their plans changed at the last minute and they forgot their cellphone somewhere or some other ridiculously contrived lie to hide their real intentions, and on top of that will boast about how they had a really great time and feel sorry that you couldn't come etc. just so you'd feel envious of them, but still remain "friends".
How would you face this kind of situation? Would you confront your friend as soon as you see them? Will you instantly break the friendship? Would you even talk to them again? Would realizing what kind of scum you've been having as a friend set you off? Would you feel stupid for trusting and always being there for them?
(ps. this thread is for ISTPjim who says that SLIs never talk about their problems or relationships. )