John Legend is joking about how his wife's behavior changed after an important person unfollowed her on Twitter.The 42-year-old singer appeared on Monday's and revealed how Chrissy Teigen reacted after President Joe Biden unfollowed on Twitter at her request.The 35-year-old model had first asked the new president to follow her on the platform since she was blocked when it was President Donald Trump's account, but quickly changed course.«Chrissy prompted him to [follow her] because she said the