Jason's used to being alone. After returning from the dead, he promptly moved into his own apartment. His "bachelor pad" as Dick had deemed it. He couldn't truly remember when you had come into his life, you seemingly just appeared one day, dumped on his doorstep after answering his ad for a roommate.
He was used to being alone, which is why he was still shocked to find you wandering into the kitchen, swamped in one of his sweatshirts. Neither of you was quite sure when two individuals became one but it wasn't long until the guest room became the guest room again and Jason's room became both of yours.
"Hey, pretty girl..." Jason's deep voice rumbles in your ear as he slings his arms around your waist. He presses his face into the side of your neck, inhaling your scent. "Whatcha cooking?"