Can't stop thinking about him

I can't stop thinking about my ex from high school. We began dating in middle school (very young love) and dated all through high school. I broke up with him a year after HS. We somewhat kept in contact here and there even though I was dating someone new who I am now married to. I haven't talked to him in around 5 years or so. He won't leave my mind. I know I'm wrong for thinking about him because I am married and I have a child but part if me just wants to know how he is doing. I'm almost tempted to call his mom who I was very close back when. I would love to just hear that he is now married as well...just so I know he's taken and then maybe he'll slip my mind. 😔