Bad Breakup😔

My exboyfriend broke up with me about a month ago because he wanted to try to work on things with his daughters mother again. We were engaged & he just left without any warning or nothing. I feel like my heart has been crushed completely & It's been so difficult for me to get over. I was so happy and in love & now I feel like it was all taken away from me. It's so difficult to go from speaking to someone EVERYDAY, to not even hearing from them at all. I don't even know how to start all over again. I just wish this was all a bad dream 😔