Complex sentence: Robinson, Jr. was a close friend and sometime lover of Marilyn Monroe, and was the prototype for the character'Eddie G.' in "Blonde" (2001), the TV mini-series about Monroe, based on the novel by Joyce Carol Oates.
Split into simpler sentences: Robinson, Jr. was a close friend and sometime lover of Marilyn Monroe. He was the prototype for the character'Eddie G.' in "Blonde" (2001), the TV mini-series about Monroe, based on the novel by Joyce Carol Oates.