this guy I used to know

I really liked him.. was so attracted to him.. but now I'm happily married, love my life, love my son, and I'm pregnant with my next. My husband has an excellent job, we have lots of fun together still. I'm a stay at home mom like I always wanted... my life is almost perfect.. except he's a different guy than the one I used to know, the one I can't stop dreaming about, thinking about, obsessing over. I should delete him off social media but I can't bring myself to do it .. I had a dream about waking up and finally messaging him, telling him about how many feelings I still have.. but I'm married and he's in a relationship and morally i can't bring myself to do that and I'm not sure where it would end up. Is my entire life going to be dreaming I'm with this other guy? I'm sure if I was with him, I'd probably be dreaming about my husband. Grass is always greener.. and I wouldn't want to change my life.. but I'm tired of thinking and longing for this other guy.. realistically he's a burn out and I know i made the better choice in my husband .. but that doesn't help my feelings.. in my mind, my feelings are stuck in a time before bills and kids and adult stress.. and he was there during those times.. so was my husband but he's also been there during the stressful times and honestly I hardly remember being in lust with him... I have such a deep respect and love for my husband that I feel so wrong to be thinking of this other guy.. has anyone else felt this way and how did you fix your feelings?