What is the relationship between Kimberley and Bastian?

Read the email and answer the following question!

Bastian <beast_one_789@yahoo.com>

To: kimqueen@gmail.com

Tue, Jan 12, 2021 at 04:30 PM

Hi Kimberley,

Thanks for the e-mail. It is always nice to hear from a smart person like you, Kimberley. It's only you who reply my e-mail and answer my questions. Your answers really help me finish my paperwork.

By the way, are you busy with your school's work? Sorry, it's a silly question, right? I'm sure you're always busy, but you can manage it very well. Two thumbs up!

Kim, do you have some free time at the end of this month? I want to meet you. May I drop by at your house? If it's not possible, we can meet anywhere as you wish. Please decide the place. I really need your suggestion for my future.

Once again, thank you for everything you have given me. Please reply soon.

Sincerely,

Bastian

What is the relationship between Kimberley and Bastian?