Need some opinion?

Hi, what will you feel when you found out the name on your husband/ wife search bar on facebook was the mother of your child's teacher? Will you feel insecure? Or probably ignores it? I've confronted, the response was " it was just a coincidence " 😅 Have been battling with my thoughts for almost abour a year. Even know itz not the answer i expect, and wanting to think positive for my children, everyday it's killing me