sounds like you have it solved.
Tell him to fukk off and get a life then
Is your ex the one seven years older than yourself? Then what does he want or need with a girl or guy who is the best friend of a girl he formerly dated? How is he even talking to this kid?
This reminds me of a Shakespearean quote. Here is how the Bard happened to disagree:
Medoest thinks thou opinion sucketh."