He left me and did not contact me once after breaking our engagement. Does he not care at all?

I'm so sorry that happened but the question isn't if he care but if he even deserves you. You are so much better than that and you deserve someone who would treat you right.

He may care very much, and because of guilt or painful feelings it would be hard to make contact. Of course he may also be afraid of your reaction to him after he broke your engagement and your heart. Let a lot of time pass, and if he still doesn't contact you, then it's alright to try and contact him. Be clear about what you want to know and what you want to say. If you need more closure, ask for that. It's an incredibly difficult situation for all involved. The only thing to be grateful for is that he didn't before the wedding and before there were children involved. Good luck!

Sometimes it's easier for people to admit/own up to their mistakes or take accountability of their actions. It's easier to shut down and ignore their own as well as other's emotions. I'm not at all justifying their actions, it's terrible in fact, but I suppose that's the way they choose to deal with situations. It hurts to be the one left without clear explanation, if any at all. Also at times something else might be at the root of such behavior, past or maybe even childhood traumas. Of course we feel the need for closure, but most of the times it's hardly given to us. Just remember, how he acted is not a reflection of you or your own self.

Wow. You must really feel that he does not care at all if he left and didn't contact you once after breaking your engagement. It seems to me like you might be feeling a lot of different things: worried, sad, angry, frustrated. Would you like to share more about how you are feeling? You're a strong person to reach out and ask for help when you are feeling this way. I hope you can find out what it is that this experience might be leading to you in your own life. Do you want to talk about this some more?