Sure, here is a detailed example of how you might write a heartfelt birthday message to a friend in English:
Subject: Happy Birthday, [Friend's Name]!
Dear [Friend's Name],
I hope this message finds you in great spirits! Today is such a special day because it's the day we celebrate you and the incredible person you are.
On your birthday, I want you to know how grateful I am to have you in my life. Your kindness, strength, and unwavering support mean the world to me. You have a unique ability to brighten up any room and bring joy to everyone around you.
I remember the first time we met at [mention a place or event], and I knew right away that we would become great friends. From our countless laughs, deep conversations, and the adventures we've shared, each moment has been a cherished memory. Whether we're [mention an activity you both enjoy] or just hanging out, you always make everything more fun and meaningful.
Today, I wish you all the happiness in the world. May your day be filled with love, laughter, and everything that brings you joy. You deserve nothing but the best, and I hope this year brings you amazing opportunities and wonderful surprises.
Here's to another year of friendship, unforgettable moments, and achieving your dreams. Happy birthday, [Friend's Name]! Let's celebrate and make it a day to remember.
With all my love,
[Your Name]
This example includes personalized touches and specific memories that can make your message more heartfelt and meaningful.