Just as much as relationships compel us to want to die, a new or renewed relationship compels us to live. The thrill and excitement is out there for you. Don't be clingy, though. Have comparisons, date, have fun with lots of people and when your confidence returns, you will be ready for a solid relationship. If you act insecure and play silly games in relationships, get your act together so you won't repeat the games in your next relationship.
People die often from causes related to loneliness and broken hearts.
Don't just blame him or her for your unhappiness. Get it together and much of your distress will go away. To ask for help in a difficult situation is not a disgrace but a sign of inner clarity. People die from one intense experience or one sudden disappointment. Don't allow any one big problem to determine your fate.