Corey is generally a pretty anxious person but it all fades away when he stands next to Hayden. She's so confidant it's like she has extra just for him. She never needs to ask him how he's feeling, she just knows. Corey doesn't need anything more than her.
Headcanons under the cut.
Hayden is incredibly in tune with Corey's chemosignals and Corey loves it, he doesn't have to verbally communicate all of the time and that thrills him
Corey goes to all of Hayden's soccer games and vice versa, he loves looking into the crowd and seeing his girlfriend
Hayden loves being Corey's girlfriend and he loves being her boyfriend
The two of them are fairly active and like to bike together instead of driving, though Corey has a beat up truck that he drives Hayden around in
Hayden is the big spoon and Corey is the little spoon, though they switch around sometimes depending on who needs it more
Corey loves to pick flowers for Hayden and will often bring her flowers, when she realized how much he loved them she started bringing him flowers too, so their place is always full of color
Hayden is someone who goes up high when she's scared or has nightmares so when Corey is looking for her and can't find her he starts looking on the roof