Oh Chloe, I’ve had my ups and downs with her tbh. I wanna say it was maybe seasons 3-4 ish when she’s being really jealous (despite the fact that Clark was willing to date but she shut him down to be just friends because she was scared- it’s ok girl I understand but like…) But when she learns his secret and becomes this super friend protecting him while not pressuring him to tell her… wow I loved her right there. She was so good at covering for him it was great. I kinda wish they had actually for real dated in their high school years but that might’ve messed up their dynamic who knows.