Can you write a letter for an old friend? His name is Kade.

Sure, here's a sample letter that you can use as a reference:

Dear Kade,

It's been years since we last talked and I can't help but think about our good old days together. Remember the time when we used to go on biking adventures and explore the woods? Those were the days, right?

I hope this letter finds you in good health and high spirits. I heard that you moved to a new city and started a family. Congratulations, my friend! I'm happy to know that you have found your piece of happiness in this world.

As for me, I'm still working at the same job, but I'm trying to find a new hobby to keep my mind and body active. It's not easy, but I'm taking it one step at a time. I've also started to travel more often, trying to see as many places as I can while I'm still young.

I wonder if we could catch up over the phone sometime soon? I'd love to hear your voice and know more about your life. Maybe we can set a date and time that will work for both of us.

Take care of yourself and your family, Kade. I'm looking forward to hearing back from you.

Your friend,

[Your Name]