it doesn't necessarily mean that this person deleted you..everyone as an option on their account if they want to "show" a display picture or not...You have it to..when u go to change ur dp pic ull see at the bottom of the screen dont show a picture..that might be why u dont see one..even if he deleted u and not know if u msg him when hes online on ur list he will still recieve the msg and it will say this contact is not added to your list and he will then know..hope that helps!