I was so nervous about this business trip, being my first time travelling with my handsome and charming senior coworker. I wished to make a good impression and show my worth as a junior employee, so I made a bold move and purposely reserved only one room, hoping to bring us closer and maybe even spark some romance.

As the evening progressed and we drank delicious sake, I started to feel terrible and I now want to apologize. How do I do this without making my senior angry?
Well, first of all, it's important to acknowledge your mistake and take responsibility for it. You can start by saying something like, I'm sorry, I know I made a mistake by reserving only one room. I just wanted to make a good impression and get to know you better, but I realize now that it was inappropriate and I apologize.

It's important to be sincere and honest in your apology, and to make sure that your senior coworker knows that you understand the gravity of your actions. You can also offer to make amends, such as paying for an extra room or doing something else that shows that you understand the situation and are committed to making it right.

Most importantly, be open and respectful in your communication with your senior coworker, and try to understand their perspective. If they are angry, listen to their concerns and try to work towards a resolution that works for both of you. With a little bit of patience, kindness, and understanding, you can overcome this situation and move forward with a positive relationship with your senior coworker.
Thank you, I will try... What are some other ways I can get closer to my senior coworker that won't make them uncomfortable?