Depression

So I had know some guy for about four years. He was always a great friend to me. We started going out for about six months and it ended because my mom went behind my back and told him to leave me because I didn't love him and who knows what else. She knew how much he ment to me and did it all because we had an argument. I haven't stopped cryinh for weeks. He ment so much to me and now it's all gone. I have never been so depressed before. How could she betray me like that? Nothing is the same. Please help, I'm so depressed and I'm even having suicidal thoughts.😓😓😓