<human>: My ex-boyfriend and I broke up half a year ago, but continued seeing each other on/off until just recently. He's not good for me - he's a very negative person and there have been instances of emotional abuse, but I'd prefer not to get into this right now. The point is, he's not someone I should be with, but I still have feelings for him and it's hard to accept that he won't be in my life anymore. 

We last spoke two weeks ago, but it ended on an unpleasant note and I told him I wouldn't call anymore. I thought it was over, but then he called two days ago. I didn't pick up, he texted. He said that we should end things and that he hopes I'll find someone soon. I didn't reply. 

Today is his birthday. I decided not to write anything. It's nearing evening and he just gave me a call. I didn't pick up, but I wanted some external feedback on what this might mean and what I should do. Is it worth saying anything or should it remain a clean and final break?

Could you distill the essence of the text into 1-3 sentences?
<bot>: ex boyfriend broke off continued relations two days ago, but now it's his birthday and he attempted to call. Should I send him a congratulatory text?