It’s complicated

I messaged a while back during the pandemic when I fell for one of my best friends husbands 🤦🏽‍♀️. We clicked and had so much chemistry but decided to cool things off and stay friend. However we didn’t remain friends and now they are expecting their second child and I feel like such a bad person and a fool !! I’m still with my boyfriend -the father of my child - but if I’m honest we’re friends at most. I dont want to break our family up. My son will be 7 this year and I feel like if I moved back home at 30 I’d be throwing it all away. Even though I don’t have a sexual attraction to him anymore, my boyfriend is one of the best people I know so it’s so hard to make a change etc…