Slaven Vlasic/Getty Images; Stefanie Keenan/Getty Images Lupita Nyong’o announced that she and boyfriend Selema Masekela have called it quits —and alluded that the split may not be amicable. “At this moment, it is necessary for me to share a personal truth and publicly dissociate myself from someone I can no longer trust …” Nyong’o, 40, […]