If you have more time, consider visiting the Rohtang Pass in Manali or explore the beautiful valleys of Srinagar. For less time, skip visiting the Gulmarg and spend the day shopping in Shimla's Mall Road. Make sure to pack warm clothing as both Shimla and Srinagar can get chilly in the evenings. Don't forget to try the local cuisine and enjoy the scenic beauty of the mountains with your loved one.