Love is fleeting. Youâll have 15 sexual partners in your lifetime, according to the Centers for Disease Control. Chances are youâll get married, and odds are youâll end up divorced. But thereâs one love that will never leave you: your mouth. Sure, itâs got its downsidesâspreading rabies and off-key singingâbut it also smooches, eats, and makes you sound smart sometimes. Today, give it some love in the form of a quarter-inch-thick brown-sugar shortbread cookie from Macrina Bakeryâa treat bigger than an oxâs heart and so buttery delicious youâll tongue a mirror in gratitude. (Macrina Bakery & Cafe, 2408 First Ave, 448-4032, 7 amâ6 pm, $3.75)