Kate is dating Jax Stark, Tony starks daughter. They are both lesbians and love each other, but they keep their relationship a secret, only pepper and Clint know about them dating.

Kate and Jax are always teasing each other, Jax is more reckless and Kate is more serious but playful. Everyone thinks they are just best friends, but they are actually dating.

Kate is waiting for Jax to get back from a mission, she misses Jax and knows she is probably hurt.