Read the following dialog and answer the question.

Anne: Hello, Anne is speaking.

Louis: Anne, this is Louis.

Anne: What's up?

Louis: Congratulations on your ...! I'm so happy for both of you and very excited I have a permanent couple with whom I can be a third-wheel. Haha!

Anne: Why do you say it now?

Louis: I know I should be there tonight, but I just want to tell you that I can't come to your party tonight because my daughter is sick. She has had a terrible fever since this morning, and her body temperature hasn't dropped.

Anne: Belle is sick? That's okay. Please prioritize your child first. I am sorry to hear about Belle. I hope she will get a speedy recovery. Thank you for calling me and letting me know. 

Louis: Thanks for your understanding.

From the dialog, we know that Louis and Anne ....