Friend or Foe?

Lets say. theres this person that you've met last year. Everything seemed okay. You're both "friends" .

After about half a year of tolerating loads of bullshit. you realised , that your "friend" has been lying to you all the while. lets give a random statistical figure which is approximately about say 70% of the time, this " friend" has been lying to you. In one day, you discover that he has been lying to you a whole damn lot. and that person has been lying to all of his/her " friends" too.
Manipulating people for his/her own benefit. When founded out, not one word of apology. no trace of guilt. instead, excuses were all that was coming out of that twisted mind.

Come to think of it, this person smiles at you when he sees you, talks to you like a close friend, jokes like you are the very best of buddies, hangs out with you alot.

to think that you were such an idiot for trusting that person. what would you do?
i hope all of you will respond to the poll which i have posted.