You don’t actually know what his father told him, and there’s no real way to know. It’s very possible his dad mentioned seeing you. It’s also very possible it meant nothing at all. Same with Facebook. Parents talk. Sometimes casually, sometimes not at all. Trying to decode that will only make you spiral.
What does matter is this part: you reached out kindly and clearly, and it’s been two weeks with no response. A pending request isn’t a yes. It’s just silence. And silence is information, even when it hurts.
That doesn’t mean you weren’t important back then. It just means he’s not stepping forward now. He could be busy, dating someone, or just not interested enough to reopen something from years ago.
I wouldn’t send another message. You didn’t do anything wrong. You showed interest. That took courage. Let this rest. If he wants to reconnect, he knows exactly where to find you.