Should I date him?

I met this guy (24) through a dating app around two weeks ago and we really connected through chat. I felt attracted to his personality, he seems funny and intelligent and we can chat for hours, it feels easy to talk to him and I think I like him. However, he has been mentioning her ex girlfriend quite often, they’ve been 4 years together and they met when they were both suffering from depression so they connected through that and they developed a strong emotional depency. He told me she broke up with him via text, no real reason why and after this he went through a depression again, this happened like a month ago, but now he is feeling better (that’s what he says). However, I can feel he is angry when he talks about her and he has also mentioned that he suffers from insomnia quite often so it makes me think that perhaps he is not over her yet, and I told him this the last time he mentioned her, but still, he tells me he is fine now and he is over her. But I am not sure it’s true, since he mentions his past relationship quite often. We are supposed to meet in person in a couple of days and I’m now hesitant whether I should give him a chance or not.

Thank you for reading and I apologize for any mistakes as English is not my first language.