Manifestation

Since my ex left me I’ve been into manifestation. It really worked we begin to talk again and he told me he misses me. The problem is that he changes his mind pretty often and I have the feeling I’m confusing him because of what I manifest. I just found out he is talking to a new girl and I’m scared that I did something bad. Does any of u know if I’m allowed to manifest if he is talking to someone else? (They are not dating)