[ WARNING: Never attempt this at home or anywhere. We are not responsible for any harm caused or stupidity.]
Overcoming heartbreak isn't as easy as 2 minus 1. It is supposed to be hard in order for you to be tough. Some of us, who might have had the lowest point in life could probably have thought/attempted such stupid things as suicidal. Yes, you were hopeless then, even you deemed Allah couldn't help you. That thought itself, is the most foolish ever. He sees you, He hears you, He understands you, He is The Most Gracious, He is the Most Helpful. So why wouldn't He help ? You must help yourself first. The art of curing heartbreak is not how you fix it, but it's how determined are you to fix it.
Man (read: humans) do not have any right to take own's life, because we weren't the creator of our life anyway.
Living on after heartbreak is one big relief. That's a present from God before He rewards you with bigger prize after passing a huge heartbreak test.
In Allah, we (must) have faith.