User blog comment:KarpToEndAllKarps/OCs please/@comment-31953669-20170817235314/@comment-32629987-20170819123259

@RBW, Thomas won't like Mary's optimism, due to being an pessimist. But if Mary is really persistant with patience and optimism, Thomas will come to like her as a friend, although he won't admit it.

So yeah, basically a tough nut to crack. You're right, in the end, he'll get along with Mary.