Caught Myself Lying

I caught myself tonight, looking through old photos and videos of my ex. It was just for a moment, but it stung to realize how much I still think about her. We were married, but we're divorced now. I haven't told anyone this, not even my therapist. I feel so guilty, like I'm betraying everything me and my wife have worked on. But these feelings won’t go away. Every time I see a picture or hear a song that reminds me of her, it’s hard to breathe. It's been six months since the divorce, but she's still in my head all the time.