A mosque in northeast Sacramento recently hosted an evening of speed-dating for 48 singles looking for love American Muslim style. Every four minutes, the men played musical chairs, moving one seat to their left to chat up the next woman across the table. Each took notes on whether they'd like to continue the conversation. Call it "speed mating" – Muslims don't date without chaperones and aren't allowed to have premarital sex. Dancing, kissing and drinking also are off limits. Similar "matrimony events" are unfolding at Islamic centers across the country to help Muslims – many of them career-driven professionals –...