Pisces, if you don't want to lose your loved ones, you have to stop paying with them what others did with you. They don't deserve you to be a pessimistic person.
They are by your side because you are a person who cares about others and because you know how to take good care of the people around them. Don't let pessimism ruin your relationships. Stop thinking everyone will hurt you because of Pisces; it will not be like that. The world is full of good people, and you don't have to pay with them for the damage they did to you in the past. If you keep being this pessimistic, you will lose more people than you would like, and this time, it will be your fault. Enough, Pisces, trust more in the goodness of people, and don't let the damage they did to you in the future get in the way of your current relationships. Take care of your people as they deserve and trust them just like they trust you.