I wouldn't trust this player if I were you.
(Nie ufałbym temu krętaczowi na twoim miejscu.)
Don't believe him, he's a player - he must be cheating.
(Nie wierz mu, to manipulant - na pewno oszukuje.)
I know that he's a player but I'm watching his every move - he won't lie to me.
(Wiem, że to oszust, ale obserwuję każdy jego ruch - nie okłamie mnie.)