I went on a date with this guy who was introduced to me by my friend. During the date he did not look me in the eyes, avoided eye contact and did not ask any questions about me. At the end of the date he said he hoped we would get in touch. But,from that night he has not texted me in 3 days. My friend who introduced me to him said I should text him because he was the one to ask me for coffee first. I am not sure because even though the guy seemed shy and insecure, maybe he is just not interested. What should I do?