The question states that three songs were not written completely by Barry White. The options provided are "I Can't Believe You Love Me," "Oh Love, Well We Finally Made It," "You're the First, the Last, My Everything," and "Can't Get Enough of Your Love, Babe." The correct answer is "You're the First, the Last, My Everything." Therefore, this suggests that the other three songs, "I Can't Believe You Love Me," "Oh Love, Well We Finally Made It," and "Can't Get Enough of Your Love, Babe," were written completely by Barry White.