Why do Pisces men run away from there feeling?

Its just a trait that Pisces men hold i've found and ive found alot of them to be liars and very deceitful. Im going to say he already had the girl but they arnt going out they were just like you and him and he slept with you and he's sleeping with her but you want to stay around and he doesnt want her to find out about you...its going to hurt but just stop texting him and ringing him and leaveit..if he wants you he will txt one day and thats how youll know nif he is worth it or not