These are just my stupid preferences and opinions that are hardly representative of the general populous, but I don't find the big dumb jock character interesting. It feels like it's another case of a nice girl with a total asshole that makes everyone wonder why they're together. But perhaps he has a heart of gold deep down, but I dunno. He needs to be a little more likeable. I've seen other characters in other works that have a lot of negative qualities, but I can see glimpses of goodness in them, like Peggy Hill. Jason just seems like a butt so far. Though I guess he's starting to see that. And I dunno how much a main character you want him to be, so perhaps his only function is to be a butt.
Edited for subject/verb agreement.