Don't worry that love letters are a thing of the past.
Consider writing a love letter to someone who is not a romantic partner.
Don't worry too much about making it sound like A Love Letter.
If you don't know where to start, make "past, present, and future" the outline of your post.
Start with a for-your-eyes-only rough draft.
Make it super personal and super specific.
If you're at a loss for words, it's OK to include quotes.
Don't worry about the length.
Remember to write it for them, not for you.
Forget about how it looks.
Keep in mind that the format isn't as important as the message.
Know that it's OK to ask for a love letter, or suggest exchanging love letters.
The actual delivery doesn't matter and can happen in a number of ways.
Consider turning your love letters into a ritual.
Don't be afraid to really open up.