Someone who smiles too much with you can sometime frown too much with you at your back.
hurt hatred smiles insanity food-for-thought trick trouble deception gossip fake bad-people devil fake-friends haters negative negative-people pretence sycophants demon pessimism strategy slander toxic-people chemical attack villain plot calumny pretenders acid swindle counterfeit fault-finders decievers incessant ploy slanderers troubesome-people