I did a PhD interview on 22nd of November, with high hope, I believed i was going to be selected because i have sent my CV and summary of my master's thesis to the group leader. After my PhD interview he told me he knew my supervisor and even told me to extend greetings to him he then continue by saying "i was the best applicant so far" so he told me to send my full master thesis to him and he will in return send me article related to the PhD programme i applied for.. I did and he sent me some article. Its been almost 2weeks now and i have not heard from him. Does this mean he deceived me and reject me? Why will you send article to student you won't pick for a phd? I am really confuse here.

You will be contacted soon to let you know your true fate. They can't reject you without telling you. You better delete this message because if they see it, you may miss your chances. Better write him a polite email to know the next thing in the program.