I have been know to wax euphoric about being a mom. I’ve written reams on breastfeeding, the mom/dad equation, and milestones. I’ve shared what little wisdom I’ve gleaned from the journey of 2 to 5. I’ve achieved neither fame nor money for what I’ve done, but man, I’ve loved it. The friendships, the memories captured in adjectives and thoughts. It has felt like full-bodied preservation of my life so far, until the other night. Sean has been getting together with two of his childhood friends. They sing, and as they do I writhe with self-loathing for not having that skill and butterflies for the hotness that is my husband singing crazy-sexy songs. Seriously, weak-in-the-knees, ready-to-release-cat-calls kinds of excitement. For my husband. Three kids, ten…