Antinh85:
I saw someone made this comment about his character and I find it to be quite true. Before his trauma, he was known to be very lively and ambitious. He was more outgoing and confident. His brother not only broke him physically but also emotionally so that was why he felt that he didn't deserve. If it was the Jing before, he wouldn't be feeling that way at all. I believe he wouldn't like her as much if he didn't go through what he did. It was said that he never liked any girl before XY so he was very picky and it was hard for someone to catch his eye. He would probably still liked her but not as deep as he is now.
Plus if they didn't have the connection of XY saving him, it'll be hard to see Jing falling her that deep.
He was a very kind person too. Which made TSH hate him so much. So, I'd say he would still fall in love with Xiao Yao for her carefree attitude and kindness.
He's a guy who comes with all the best features.