How can i tell this guy to eff off?

if your replying to his messages, its probably giving him the idea that you wanna talk to him. he sounds extremely full on and if you dont want to talk to him anymore, then you should just stop replying to his messages. if he doenst mean anything to you, and he is starting to freak you out, you have no reason to be nice to him. if he continues to send you messages, just get his number blocked. he sounds quite creepy to me! i would steer clear of him!