Hugo Maienza, bartender at Paddy O’s at Faneuil Hall, says Jessica Simpson and her fiance, Eric Johnson, are as nice as can be. “Casual and friendly, the couple ordered a Guinness for him and a Blue Moon for her,’’ Maienza said. “She was gorgeous.’’ He sent a pic, but it’s too blurry to publish. Maybe his hand was trembling. . . . While in town for shows at the Citi Wang Theatre, Neil Young stopped into Legal Sea Foods in Park Square for dinner. . . . Olives owner Todd English got his groove on the other night, hanging with rapper Sam Adams, Pats linebacker Jermaine Cunningham, and 6one7 Productions’ Jeff London at District.