Christian Thiel has been advising singles and couples in his own practice for more than 15 years.

He also organizes workshops and individual coaching for partner seekers and has published several books on the subject.

The question to couple counselor and coach Christian Thiel:

My new partner (37) has installed an app on his mother's smartphone with which she can follow every step he takes.

So she always knows exactly where we were, whether in the sauna or hiking somewhere in the Harz Mountains.

I feel uncomfortable.

Then he just says what I have against his mother.

In addition, the mother is allowed to know about each of his steps - but not me.

He refuses.

I can't handle it and we argue about it more and more often.

The couple counselor answers:

Two things are striking about your story.

First of all, the mother has more rights than you - his partner.

That will not do.