Like most of the concerts
Really man, it is extremely sad that this the only thing that you understand from the whole situation ( including what you did before her going wherever she went and after )
You got triggered that she went without you, instead of keeping your cool and seeing how she will behave. She could have stayed only 1h for the concert, maybe she would have stayed all night, maybe she would have been gangbanged by the artist and his friends, maybe she would not have went all together. You know what, it does not even matter what she would have done because she is not your property, and no one forced you in a relationship. You forced yourself in a relationship
You have no idea how a person is, and that is why you should embrace these kind of stuff in order to better know them and thus vet them for a relationship or not
You just got triggered and started getting jealous pre and post, and shot yourself in the foot in the process
The poor girl is innocent and most likely she is quite happy that you lost focus so easily and thus dodged a bullet. No one wants to have a relationship with a drama queen
Dunno man, to me it kinda sounds that you are either dumb or autistic. You just don’t get it