DEAR ABBY: I’m a 45-year-old woman who has been dating “Ben” (53) for two years. We have known each other for more than 20. He treats me like a queen. Prior to our dating, he had a girlfriend he used to confide in me about. I was very jealous of her. She knew we were friends, so she made a point of posting lots of pictures of their PDAs on his social media, since we did not follow each other.

Fast-forward two years: Abby, I cannot stop obsessing over her! I think about her constantly and compare myself to her. I stalk her social media page. Ben has never given me a reason not to trust him, so why am I still bothered by her?