Need advice FYI super long PART 2

That same day I posted on here (4/18), we talked about it and he said he would do whatever it took to fix and show that he cared. The next 3 days he was acting different and he barely replied my texts. So I decided to go over and figure out what was happening. He lost his jobs and was going through a lot, but it had nothing to do with me. So I stayed there trying to make him feel better, he told me he didn't wanted to lose me, that I was the best thing that has happened to me, that he would do anything to make me happy, talking about our future together, and a lot of other stuff. The next day I texted him in the morning and nothing, I texted him at night and he replied with a very short answer. So I asked him if he was okay, and he told me that we needed some time apart, that things weren't working out. And what really bothers me is that he sounded so indifferent on the phone, like he didn't care. How can someone say and feel like that towards someone and then the next day don't feel anything at all?

I knew this wasn't going to work out and maybe I should've ended it a long time ago, but I got attached, and now I feel so pathetic, letting a 19 year old break my heart like he did.