Aunt's bewildered over ingratitude

Without question, you deserve to be thanked and acknowledged, but one source of your nephew's breach is his parents. They obviously have not prompted him to be thoughtful, and he is acting entitled. It's too bad they didn't raise him better.

Don't teach your nephew through your actions to avoid people when things get challenging.

You should tell him honestly that you had hoped to hear from him and are disappointed that he has not been in touch. Tell him you miss him.

Then you can all get a fresh start.