Can’t stop dreaming about my high school love

I started dating my now husband in 2011, and we got married in 2015, when I was 19 and he was 20. (I’m now 23 and him 24). Before we started dating I was completely in love with this guy Jake. He and I were best friends and we actually purposely took the class that I met my husband in together so we could be together more often. He was on and off with a friend of mine a few months before we got really close, so I never told him my feelings and I kind of knew he liked me but we were taking it very slow. Well I started dating my now husband soon after because he asked me out and I didn’t want to turn him down (even though at the time I didn’t like him). I eventually started falling for him and that’s when Jake decided to let me know he made a mistake in not saying something earlier and wanted to be together since he was staying nearby for college. I, being young, immature, and confused, didn’t know what I wanted and was fiercely loyal to my boyfriend, maybe to a fault, and said I didn’t want to be with him when in reality I was confused and didn’t know what to do. At one point I broke up with my boyfriend (now husband) and he literally said to me we are not breaking up and I just let him tell me that because I was young and dumb. Well I am now married to this guy and I love him very much and have a son with him, but I’ve been struggling for literally 7 years (since I found out Jake was in love with me) with having dreams about Jake and what our life would have been. I deleted Jake off all social media in high school and deleted his number. Within the last year we’ve become friends again on social media and talked once briefly just about how we are and stuff. My question to this long drawn out story is why do I keep dreaming about him and how do I make it stop? It’s making my life hard because I love my family but he’s constantly on my mind. I’ve never cheated or done anything stupid so don’t judge me for my thoughts, we’re all human. I appreciate any advice or thoughts.