If Jake told Kate he might be joining the NBA this year and not doing it would be much worse than hiding something from her, but not to feel too bad Jake decided to tell Kate about the movie he was shooting this year.
When Jake said about the movie he was filming this year with Keanu Reeves she was surprised because she realized that this was another really great movie just like what she had seen Jake do, and this time Jake said he would have a real character in the movie with a lot of appearance time.
Kate didn't expect Jake to really continue his acting career, let alone when he was so busy with basketball and marathons, but she naturally understood that Jake really wanted this and that seemed like a very good job opportunity.
Kate didn't want to be an actress and she didn't think she had any talent for that, but she really respected the actors because she knew some actors and party actresses she attended and she knew how difficult their lives were.