I can't be able to meet Cassie and game is stuck and not able to go further in Leslie as it's saying to meet Cassie first and learn exercise for making dinner and basket is also not showing for laundry and new athletic suit for leslie.
You need to complete the sabotage the laundry quest before being sent to work out with Cassie, which is before the date. If the basket hasn't spawned you need to watch a romantic movie with Leslie
