If you would like to erase the memory of us. I can't forbid you. You meet new friends, chat with you and understand you more than me. Not to mention take care of yourself!
If you want to erase the memories of our good. I can not stop you. You will meet new friends, the more I talk to you and understand you do not take care of yourself.
If you want to erase memories, I can't stop you. You can meet new friends who talk with you and understand you better than me. OK, take care of yourself.