Why does my heart hurt when I see a pic of him?

My ex broke up with my a while ago. I went through all the stages, the bargaining, the crying, the denial, the anger, and finally the acceptance. I realized what went wrong and how he had treated me wrong. I realized I never wanted to get back together with him but I did still care for him since we were together for so many years.



I found a new guy who is really great and accepts all parts of me and admits he is falling in love with me (and I feel the same way).

Yet, I accidentally found a pic of my ex the other day and my heart hurt looking at it. I didn't want to go back, I didn't want to be with him, I'm happy with my new guy, yet it hurt looking at it. Why?
Why does my heart hurt when I see a pic of him?
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