The feng shui of his family is not good for you, or there is something that is not good for you;
Please ask for a consecrated amulet, looking for one with aura and magic power, you tell him, he Know how to do it.
Practice Zen by yourself, but this is slower. Once you enter Future Zen, those who are not good will basically not dare to approach you.
Go to his house less often. Be kind to yourself.
Be open-minded about everything.