[Girl's Family Name] [Girl's Family Address] [City, State, Zip Code]
Dear [Girl's Family Name],
I hope this letter finds you in good health and high spirits. I am writing to formally request a meeting with you to discuss a matter of great importance to me.
As you may already be aware, I have been in a relationship with your daughter, [Girl's Name], for quite some time now. Our relationship has grown stronger over the years, and I believe that we are ready to take the next step in our journey together.
I would like to meet with you on [Date], at [Time], at a location of your convenience, to discuss the possibility of formalizing our relationship through marriage. I understand the importance of family in such matters, and I believe that it is essential for us to have your blessings and support as we embark on this new chapter in our lives.
I assure you that I hold your daughter in the highest regard and that I am committed to making her happy and providing for her to the best of my abilities. I am confident that together, we can build a strong and loving family that will stand the test of time.
I look forward to meeting with you and discussing our future together. Please let me know if the proposed date and time are convenient for you, or if you would prefer to schedule the meeting for a different day.
Thank you for considering my request. I am hopeful that we can come to an agreement that will bring happiness and joy to all of us.