First love

When I was at in 5th grade one short story had happened. This is a short story of what happened when I was in the 5th grade. One Julia, a girl from my class, had a birthday and the teacher decided that all pupils should congratulated her. She The teacher (you have to say the teacher because if you use "she" the reader doesn't know if you're talking about Julia or the teacher) gave us the greeting birthday card that belonged to Julia. It was sent from one desk to another. The boy who was sitting in front of me and my best friend were the only ones left to his sign in the card. My friend and I used this case moment and added the words: "I love you" right before this after he signed the card.
Finally the card was come came to the birthday girl. She read the greetings and suddenly became red because she thought that he was actually in love with her.
The teacher asked her to show the card, and it makes her much more ashamed embarrased then she was before. After reading the card, the teacher saw that boy who was going out of the classroom. She winked to him and asked: "First love, huh?"
We were standing near and almost couldn't prevent from  laughing.