So you’re on a first date and you notice your potential love interest looking down and fiddling with a cell phone under the table. Or maybe he or she isn’t even attempting to hide it. Call it a sign of the times. Or maybe just a sign that he or she is just not that into you. Whichever, many people who play the love scene have a story — usually a gripe — about texting while dating. “Oh, the fun of pretending to be interested in what someone else is typing to someone you don’t know,” says an exasperated Tyler Barnett, a 25-year-old businessman in Los Angeles.