Adriana and Brayden maintain the "illusion" of being a couple for their public image, even agreeing to a "no Freddie exception" rule while pretending to date.
The conclusion differs slightly between the original novel and the TV series: adriana leg sex
The tension between her past with Freddie and her present with Brayden drives much of the drama: Adriana and Brayden maintain the "illusion" of being