I chat with him through facebook messenger. He gave me a link (youtube link) to click. The link is just a Glee Video on youtube. Is it possible if I click this link and he can access to my facebook messenger without logging into my account?
If the link goes straight to Youtube then i would say no! However if you dont trust this person and he is potentially the sort of person that 'may' hack into your account then dont accept any files or links from him.
