Valentine’s Day shopping is way sexier and a lot less stressful when you do it together. At her new boutique La Bijou (10311 Main St, Bellevue, 425-453-0311; la-bijou.com), Stephanie Percy spends her days among men’s and women’s unmentionables. Ask her to show you both to La Perla’s silk georgette babydoll in plum, and while one of you contemplates the Leavers lace and tiny bow details, the other can size up slippery soft, Swarovski crystal-studded boxers by Bend the Rules.