Dear Judy,
We really had a happy time last Saturday. The film is really wonderful and I like it so much. It was so kind of you to invite me to have a big dinner at your home after the film. The food was very delicious and your parents were so friendly to me that I felt like staying at my own home in the UK. You are a nice friend.
You said you are not good at math. Let me help you with your math next weekend.
Best wishes to you!
Hank