Married man seeing a girl he wished to marry previously

I have recently come from hajj with my wife. I am still in Madinah. On my way to Makkah, on the same flight was a girl I wanted to marry previously. There was an attachment previously but her mother said no. It was such a test to see her and I constantly questioned myself why Allah wanted me to see her just before hajj. Through the days of hajj Alhamdulillah I managed to suppress the feelings. Last few days all the feelings I had previously for her are resurfacing, and I have a loving wife who seems to notice that I have been a bit sad lately. I don't know what to do in this situation. My desires are to be able to see her face one last time. But I know it is wrong. How do I approach this. How do I get over this?