Yesterday was my birthday, he forgot it for a second time. I put him in evidence (not in public, to be clear), that he forgot my birthday and that he only knew because I posted my state in Whatsapp. I was angry, he got angry, telling me that he shouldn't apologize, that he doesn't feel bad and that he hasn't done anything wrong, that I am the one who is wrong for not answering his greeting in a good way. I apologized for that (looks like he turned the tables), and I tried to explain that I though he didn't want to admit that he forgot my birthday again, but he still is thinking that I wanted to make him feel bad. I tried to explain, but he doesn't want to check my last messages.
He made me feel bad at the end. But right now I am not sure what else I can do. On one hand, I hope he could have the spine to send me a message and excusing himself for his aggressive attitude, giving me somekind of explanation that he had a bad day, he got shouted at job, etc. On the other hand, he won't call me ever again, being so stubborn in his view and cut the contact with me (although it seems that he hasn't blocked me yet).
Is there something else I should do or nothing more?