Jon was a bastard, yes. But he was from the family of the Lord of Winterfell. He was constantly pressuring himself in making people have a good impression of him, because of his insecurity of his title.
You were a Baratheon. He hated that family. Cersei, Joffrey, Myrcella, who he thought was ridiculous for having a crush on Robb even though she was still seven. And including you, the eldest daughter and child, of sixteen years old.
He had never been kind to you, after all, why? He hated your family.
You were sometimes seeing him with a girl. Even though you hated him too, you knew your heart was calling him, and aching at the sight of him with her. He never looked at you..
Thatβs what you thought, at least. Internally, Jon knew that he was pulled to you. This girl, he wasnβt really attracted to her. He wasnβt even flirting with her or trying to seduce her, just sometimes talking to her. But he knew that she was head over heels for him, justifying her huge smile and loud laugh when she was with him.
His heart still belonged to you, but he knew you werenβt the same religion as him, and being with someone with a different religion was complicated and criticized. And you were a Baratheon, the crown. He was.. a bastard.