the opinions expressed in this commentary are solely those of the author. my father and i started walking down the aisle in the front yard at my childhood home, and chris shot me the widest smile i’d ever seen. yet after two decades, who wouldn’t be intrigued by the thought of having sex with someone new? your neurotransmitters are firing on all cylinders, the mere thought of the person can send a surge of dopamine through your body and even …