There are negative consequences if you get involved with Jaye. She locks you out of some side content, with Lisa in particular.
Adding to the discussion above - I'm personally not a fan of Jaye. Even though her CG model is fine, the color choices for her hair, eyes and tan seem unnatural and give me an huge uncanny valley vibe.
On top of that her character, as
Alfred the Fallen described it, is too inconsistent. I wouldn't go so far to say that she's violent though. I kind of get why she's pissed off when someone makes decisions for her, but holding a grudge for years is a huge red flag. It doesn't make a compelling argument for being in love, rather the opposite. Personally, I wouldn't want to be in a relationship with someone like that - it would be a nightmare.
Maybe I didn't read the same thing that you read. What "grudge" are you referring to that she held? Other than the grudge that they both hold against Christian, I'm not following you. Unless you are talking about the grudge she holds against herself for acting the way she does when the MC is around. As for her feelings for the MC, the "grudge" she holds is not real. Its a wall she uses to ignore her true feelings and protect her from feeling hurt. She actually began to drop that wall as she hoped to see him at her graduation, and then put the wall back up when she was hurt that he didn't show. Which she instantly forgives him of when she learns of David's death.
To me, Jaye reads as an immature young girl who acts adversely to her actual feelings most of the time prior to their talk on the Sunset, because...
1, she is fighting against feelings that society tells her she shouldn't have for her step-sibling, and
2, she is terrified that if she is open and honest about how she truly feels, it will leave her vulnerable to being hurt by the MC's potential rejection.
Using anger and hostility as a self preservation method and a cover for ones feelings is something at which humans typically excel! Especially in situations where we have convinced ourselves that our love would go unrequited. Further more, the MC actually tends to do this himself as well, to an extent, when instead of admitting his true feelings, he just runs away from the entire world.
I honestly see both of their actions as very normal, immature, human responses to love, and to the fear of not being loved in return. to quote Moulin Rouge...
"The greatest thing you'll ever learn, is just to love, and be loved in return."
That's the journey along which I see Stone Fox taking the MC and Jaye.
A journey of maturity, revelation, understanding, forgiveness, and love.
You can't very well have a
taming of the shrew, coming of age, maturity story with characters who don't start off very immature... Just saying.