I'm assuming you're referring to the Marathi movie "Manje Bistre". Here's some content related to watching the movie online:
"Manje Bistre" is a 2016 Indian Marathi-language romantic comedy film directed by Rahul Deshpande. The movie stars Rahul Deshpande and Priya Shinde in the lead roles. The film revolves around the story of a middle-aged man who falls in love with a young woman.