To answer the question from this thread https://forums.androidcentral.com/ask-question/1035822-other-persons-phone-number-suddenly-listed-mine.html?mn_qa=1#post7013877, yes, I am sure. I haven’t even called this person in years. Was kind of shocked. I still have their number saved, then all of a sudden, my contact profile said that it was mine shortly after I brought them up. I have no idea that messaging apps can do something like this, unless my phone is already compromised. It’s an old Samsung, though.