Friend requests too much

DEAR HARRIETTE: I got a social media message from a guy who went to college with me. We have not communicated in more than 20 years, and there he was in my inbox. He was very pleasant, and we started chatting on WhatsApp. It has been nice striking up a casual friendship with this guy -- up until he made what I consider to be the “big ask.” He lives in another country and wants to visit the United …