Writing a love letter to girlfriend is not easy as it seems, you have to have a good understanding of your situation. Here some tips are given to help you. As it is your personal note, you can write it in your own way. What you need to do is to understand your emotion and write your letter accordingly. Give a proper salutation so that it can add a meaning of your letter. As it is a love letter, you need to use the right salutation and it can be personal. If it is a romantic note to your girlfriend then pen your words according that justify your emotion and if it is on a serious topic, then express it to her without any hesitation, but make sure that your expression should be polite. The writing of the letter depends on your mood and for which you are writing, so realize it and state your point view as per your needs. Through your words, you need to feel her special and whatever the reason is, you should present that she always holds a special position in your life. Close your