What does it mean when a guy touches the back of your neck?

Anonymous
This guy I know came up to my guy friend and I. I was on my phone and the guy was facing my left side. When he got to us, he put his hand on the back of my neck. As soon as I looked up, we made eye contact. Then, he sort of stretched his neck out so he could see what I was doing on my phone. Was this him flirting with me?
What does it mean when a guy touches the back of your neck?
3 Opinion