Something's Gotta Give (2003) on Netflix

Harry Sanborn is a sixty-three year old hip-hop record company executive, who is attracted only to women half his age or younger, and who don't want anything serious beyond sex. Erica Barry is a mid-fiftysomething successful playwright, who has not seriously dated since divorcing her husband of twenty years, Dave Klein, the director of her plays. Her non-dating status is due to the fact that the men she meets of her age are either intimidated by her and/or, like Harry, want a younger plaything. Harry and Erica meet when Erica's daughter, Christie's auctioneer Marin Klein, who has just started dating Harry and who herself has never been in a serious relationship, brings him to her mother's lavish Hamptons beach house for what is going to be their first sexual encounter together, they surprised to see Erica there. Harry believes Erica is uptight and he doesn't understand her at all. Erica believes Harry is misogynistic and chauvinistic, only out for his own carnal wants, which nonetheless needs to be fueled by Viagara. Harry and Erica end up spending time alone together at her Hamptons house out of circumstance after Harry suffers a mild heart attack. The two end up bringing something out of the other each didn't even know existed. At the same time, Erica attracts the attention of Harry's emergency room cardiologist, Dr. Julian Mercer, a man twenty years her junior. Erica is initially oblivious to his advances, she believing that he is attracted to Marin - a woman closer to his own age - but he is eventually able to show his devotion and admiration of her as an attractive, strong, successful woman. Erica has to figure out what to do with both relationships. While Julian is more obvious in terms of wanting something serious with her, which is what she wants with the right man, Harry is a little less certain about what he is feeling for Erica, as romantic love has been a concept foreign in his life, even less so with a woman like Erica.