JoJo has felt “jealous” of Selena Gomez at different points in her career. The 33-year-old singer became friends with Selena through actress Francia Raisa, and JoJo has recalled comparing her life and career to that of the 32-year-old beauty, admitting that she felt “the occasional twinge of pain or jealousy”. In her new memoir, ‘Over the Influence’, JoJo explains: “She couldn’t go anywhere without security flanking her and fans mobbing her at every corner. “It just seemed like there was no sense of freedom for her to explore the world and be wherever and whoever she wanted to be. I imagined t…