I feel like a total piece of shit lately.

I'm recently married. He is wonderful. Yet for whatever reason I still think about relationships past. One in particular. Everyday of my life. I check his social media almost everyday. It is something that I have never really gone any length of time not doing. Wondering how abnormal this is. I feel wretched about it because my husband is great and this guy was... so terrible to me. The pain of his repeated luring in and eventual rejection took me years to stop crying about on the regular. Why can't I just be happy and content and finally let this toxic baggage go? Every few months I get like this. Can't wait until the fog lifts.