[Your Name, & Address here]
[Recipient Name & address here]
I am writing this letter to let you know that I have thought a lot about you during the past few days. And, I deeply felt that for the last couple of months, you are just not ‘you’ when you meet me.
It disturbs me when I find that you are not the same person I knew and there must be something wrong with you.
Although, I wish everything is alright in your life and family, however I want to tell you that if there is really something because of which you are troubled, then please do share it with me. I am always with you and I will try my best to solve your problem out.
Keeping a concern only in your heart won’t solve anything, but it will definitely increase the problem. No matter how serious it may be you, can always tell me what you are going through.
I am just a call away. Please call me without any hesitation. If you don’t share it with me, then who else would you share it with?
Take care of yourself, [person name]. You are in my thoughts. I hope to hear from you soon.
Wish you the very best for the coming times.