But that's actually an interesting setup because it's unlikely that your spouse can be all things to you.

Despite how innocently they describes this, it sounds like he has a strong intellectual and emotional connection with this woman so I wouldn't be surprised if this relationship gets rekindled and if Melinda just focuses on her own interests.

With everything else going very well and the kids launched, they probably feel its time to chase what makes them happy without whatever compromises they made for their marriage.