Original: During the 1960s, he was involved in extra-marital affairs with Nichelle NicholsNichelle Nichols, Beyond Uhura: Star Trek and Other Memories, G.P. Putnam & Sons, New York, 1994.
Simplified: In the 1960s, he also started romantically seeing Nichelle Nichols Nichelle Nichols, Beyond Uhura: Star Trek and Other Memories, G.P. Putnam & Sons, New York, 1994.