[header] How to deal with an unresponsive friend when you attempt to rekindle a friendship [title] Reach out via letter, email, or text. [step] While heart-to-heart conversations can work, which one you choose depends on what style you prefer, how long you want your message to be, and what contact information you have. [substeps] Consider writing a draft of your message, and sleeping on it, before sending it. 
[title] Apologize for your part in what went wrong, if anything did. [step] Be honest, and admit your own fault, whatever it was.