Why did my boyfriend go to the hotel to check in, and I, after that, he had to rush back to his hometown to work, instead of going out with me and taking the elevator, so the first one went first.

I feel cheated and want to get rid of it. I suggest you adjust yourself. If it's not your own problem, your boyfriend is scum. But I'll give you an idea. Don't pester him after having sex with him. You can choose to ignore him and not contact him. At this time, he will be curious and will come to you in turn.