I'm new to this thread, but I am so relieved to see people share some of my opinions on Jack.
He seems nice enough but he mentions his degree way too much and it makes me cringe, as does that whole 'ooh I'm quirky, My life is a mess' humour. Maybe I'm just getting old.
But yeah, he seems like a nice enough lad but there's something about him that irritates me and anyone I've spoken to about it can't believe I don't love him.
I went on a date with a guy once, and we were talking about books and he said 'I think the murder of his wife was a symbol for...' I said sometimes a story is just a story and he said 'oh no, I studied literature at uni so I understand this stuff more than you would.' That's who Jack reminds me of.