write the letter to his friend

Sure, I can help with that! Could you please tell me a bit more about:

1. Who “he” is (e.g., age or background)?

2. Who the friend is?

3. What the letter should be about (e.g., sharing news, inviting them somewhere, apologizing, just saying hello)?

4. Tone of the letter (formal, friendly, humorous, emotional, etc.)?

Once I have a bit more detail, I’ll write the perfect letter.