Ben Affleck and Jennifer Lopez have had the internet buzzing ever since he was pictured exiting her car last week following her split from Alex Rodriguez.Now it appears their friendship is going from strength to strength as they both attended Global Citizen’s Vax Live concert on Sunday.MORE: Jennifer Garner makes announcement after ex-husband Ben Affleck spotted visiting Jennifer LopezJennifer performed two songs at the event, dubbed 'the concert to reunite the world', and as she left the stage,