As long as he is not only mean to you,
many other people would have felt the same way and thank you for that. How about write a very sincere email to your group,such as:
I appreciate all the help you all give me and I'll miss you guys. I hope our path will cross in the future and we'll have opporutnities to work together again.
P.S. This does not apply to Mr. Indian.
I appreciate all the help you all give me and I'll miss you guys. I hope our path will cross in the future and we'll have opporutnities to work together again.
P.S. This does not apply to Mr. Indian.