Everything Under the Moon

In the short term you could do self-purifications and center and ground yourself in whatever way you normally would.

In the long term, you could do a ritual to help you let go of these emotions. One way to do this would be to sit down and write a letter to this person. Get everything out, write down all the negative thoughts you have about them, write why you're mad with them, how they hurt you, everything you can think of. Get everything out into this letter. Once you're done, fold it up and burn it, the fire destroys and purifies these negative emotions. A similar way to do this is get a natural object that will float, tell it all your troubles, and toss it into a body of moving water to be carried away from you.

You might be able to do a cord cutting. There are other ways of removing the negative energy from your life. What do you feel is the best way you work with energy? Do you prefer to visualize things or do audio guided meditations work better for you? After you answer that question I may be able to help give you some other ideas.

Another thing you could try is to meditate with a belonging of this person, like a piece of clothing, lock of hair, even just a picture of the person would work. Cast your circle. Focus on the negative leaving you and this person, welcome the positive with open arms and imagine the two of you happy with yourself and one another. After closing your circle burn or bury the belonging or picture whichever you used banishing the negative that was soaked up by the item forever. I hope this helps. Good luck & Blessed Be.

Cleansing yourself is always a good thing but when someone has betrayed you the best thing you can do is be honest with them and make your feelings and sentiments known, then wash your hand of it entirely. You cannot change people you can only change yourself and your own outlook on things. It is best not to dwell on past regrets but enjoy the coming of future days and future new connections that will touch your soul in different ways. Learn and grow from the event and move forward. If you can patch things up then I wish you all the best, but do not allow others power of you in any sense, you are your own sail so let the winds of life carry you ahead to new beginnings.