He left me without a goodbye

After years of talking and flirting, we finally dated and idk what happened he just fell off and before our 1year anniversary he left me for someone and didn't tell me. I had to find out from his mom through fb snooping..I was hurt but not surprised and the other day I just got so depressed and I just had a meltdown in my room..it felt like a panick attack. I just felt so alone so abandoned by everyone and before the meltdown I had my nephew and he was just laughing and looking at me and smiling. It just broke my heart that no body loves me like this kid does..I have two real real friends and family that's it...I know no one's going to respond but I'm just spilling what's on my heart. I need prayer I need a blessing to come my way. I don't want to go back into depression. I don't know what to think anymore.