Read and give me your opinion?

It felt like he didn’t want to talk to me anymore, he was distant and shady. He’d say he was busy, or that this has been a rough month, take 5+ hours to respond to a text, long story short he changed w me, and if I asked ehy he was being this way he’d avoid the question, say that I’m in my head, or that he’s sad. So I told him “I understand you’re going through a rough time, so I’ll give you some space, lemme know if you need anything” and he said “thanks for understanding”. Idk it felt like an ending but I’m unsure. Idk where I stand, he gave no explanation so I’m choosing to walk away, if he talks to me he does if not he doesn’t. But in the meantime I am so sad and idk how to get over this. 💔😢 Do you think its over?