Maybe you can't buy love, but you can most certainly feed it. Just ask the staff at L'Espalier, which has been trained to produce a dining experience as mesmerizing as it is meticulous. Start with a glass of bubbly at any of the crisp-linened, candlelit tables. It won't be long before the elegant courses arrive—sautéed marlin with leeks, littlenecks, and blood orange-pineapple glaze. This, plus the world-class wine list and grand décor (dark wood paneling and fireplaces in a 19th-century Back Bay townhouse) is enough to hurl you deeply into love—even if you weren't already.