I agree, this one isn’t a good option for dating. He’s not clear about what he wants from you at best, and if he really was over his girlfriend of a year within 6 weeks, I’d wonder about how well he connects with or values other people. I’m pretty sure he’s not - the opposite of love isn’t hate or bitter anger, it’s indifference.
It’s also totally fine to not want to talk about exes - it’s not your problem if he didn’t like it. And I agree it’s not your job to help him feel better. It takes time and a willingness to not get stuck wallowing in self pity.