In February 1972, Robert and Natalie reconciled. They spent several months getting to know one another again before they announced they were getting married again.
Natalie: "I think we [R.J. and Natalie] realized there was still something between us."
Source: Suzanne Finstad. Natasha: The Biography of Natalie Wood. 2002. pg. 330.
R.J.: "It was an instant reaction. We started going out again ... mostly out in Palm Springs, before anybody knew it. We fell in love all over again."
Source: Suzanne Finstad. Natasha: The Biography of Natalie Wood. 2002. pg. 337.