Tonilyn Hornung

“I love you!” I shouted out the car window as my son walked into his first day of middle school. Maybe he didn’t hear me, or maybe it was an early case of “tween embarrassment,” but his usual huge smile back was replaced by the tiniest of smirks. Wow. That was different.  My hands gripped the steering wheel tighter, and I couldn’t escape the truth: My not-so-little guy was one step…