According to a HuffPost article from 2012, Grey and Swayze “disliked” each other during their time working together on the earlier 1984 action film “Red Dawn.” “He felt like she was a wimp,” Linda Gottlieb, the producer of “Dirty Dancing,” told HuffPost at the time. “She was genuine, naive; you would do a take eight times and Jennifer would do it differently every time.

https://www.insider.com/jennifer-grey-apologize-dirty-dancing-patrick-swayze-friction-2022-4