Since when did R&B singers start beef?  According to Pulse of Radio: Lyfe Jennings and Raheem Devaughn got into a Twitter beef earlier this week. Lyfe Jennings wrote, “Ima do what (Kendrick) Lamar did but n the r&b game. Ima issue a friendly challenge. Im writin now.r&b get ready! Ima name names too! Get ya pens out!!” He then named […]