If you have an emotional effect or trigger on someone you have met only once past life connection?

What other signs are there?

I am asking because i feel i am here to find some connections from past lives in this life.

I have already found a few and done the work that needed to be done.

I evoke negative feelings and animosity in this person. I have not done anything to them ..they don't seem to be a bad person.

Is it Karma?

Also how to pick up on the positive threads ..of past connections ..if you are meant to? I have a feeling i am meant to