Stellaride is the ship name for the relationship between Stella Kidd and Kelly Severide. They are boyfriend and girlfriend. Kidd and Severide have known each other since they did a training course at the academy, which was later revealed in Bad For the Soul. Kelly also revealed that he took a interest in her when she was married. Kelly and Stella are extremely close. Severide comes across as quite protective of Stella, and they become good friends during Season 5.
‘Chicago Fire’: Casey & Brett Scoop — Their Future Together Post-Kiss – Hollywood Life
Sylvie Brett is a paramedic assigned to Ambulance 61 , introduced during Season 3 as Leslie Shay 's replacement. Originally from Indiana, Brett quickly proved herself as a competent paramedic in the field. Her adoptive parents raised her on a farm in Indiana. They later had a son who became Sylvie's adoptive younger brother.
Based on what we saw tonight, Sylvie seems to be intent on trying to move forward — and in a lot of ways, we understand. We imagine that all of this is made all the more apparent to Brett by the fact that she saw Dawson and Casey together for so long. We also talk more about what we saw with Severide and Kidd, the friendship building between Brett and Mackey, and also a tease for a big Joe Cruz story coming soon.
Joe Cruz is a firefighter on Squad 3 , and the former driver of Truck Joe's troubled younger brother, Leon Cruz, is in the street gang, Insane Kings, and he is desperate to keep him out of harm's way. He is haunted by a decision that he made on the job relating to his brother that later effects his own safety, and the safety of his fellow firemen. In a fire, Joe saw Flaco, the leader of his brothers gang, and left him to die.