5. Be apologetic that you can’t accept his invitation.
Some guys said being told “sorry” was comforting. “It must mean that she doesn’t dislike me,” a guy in his 20s said. Instead of turning him down bluntly, be sincere and apologetic. For example, he would prefer if you said, “I’m really sorry”, or, “I feel really bad I can’t join you”, rather than, “I’m not available”, or, “Sorry, I can’t.”