Lizzette Martinez (Amy Sussman/Getty Images) Lizzette Martinez, a victim of abuse by R. Kelly, says she “can’t unsee” the recently-unearthed video of Sean “Diddy” Combs physically assaulting his ex-girlfriend Cassie in 2016. CNN published the footage in May, in which Diddy was seen beating Cassie, now 38, in a Los Angeles hotel. He grabbed Cassie…
