Clever Things To Write In A Card What Should I Write On Her B-Day Card!!!???!!!!?

What should I write on her B-Day card!!!???!!!!? - clever things to write in a card

What to write for a thing in this B-Day card?
Long story short, a not so tight and my friend invited me to his bday party for some reason.we had a big problem is between her and me about 7 months. I apologized and said: "The past is the past, dont worry, 'but she said that our friendship has developed so far." M now invited to his party BDA, but I do not know what to write on your card bday. I want to write something intelligent, but not too obvious that it has something to do with our past friendship.
HELP PLEASE!
Your bday is tomorrow!