Since you've agreed to talk as friends, ask yourself whether you'd get this worked up about conversation topics with other friends. Friends often talk about mundane aspects of their lives -- what's going on in their family, school, and social lives. Start there. Learn the art of open-ended questions and follow-up questions. Build on what he says by offering related information about your own life. Genuinely listen to him. So few people actually listen these days. Don't forget though that he did say he doesn't share your romantic feelings, so respect his feelings.