Meant to post this on r/relationshipadvise but the guidelines didnt allow it. Throwaway post. I have been dating my girlfriend for a year and eight months by now and I have to admit that she is one of the best people I have ever met. We have good communication, similar interests and are very compatible overall. She has never given me any reason to feel jealous. However, she recently found out that her ex will be married soon and I feel like she has been mentioning him more than usual. They broke up over 6 years ago now and it was a really bad breakup. Prior to that, they went backpacking through south east Asia and they took a lot of pictures. She still has all of them on her account under an album named "Our adventure".I knew this when we first started dating and at first it didn't really bother me although I thought it was weird. Lately however, its been on the back of my mind and I'm wondering if it is worth talking to her about it. For context, I have been cheated on before and I do not have much relationship experience so there is the possibility that I'm making it a bigger deal than it is in my mind. I do love this girl and I want to be with her, but I'm also not sure how to feel about this. Do you believe this is something worth discussing or should I just get it together and get over it?