You are not a failure. Every human life is useful and should be used sparingly.
Also, I don't care. There is no such thing as "True love". You can love again. I have a feeling you are very young. There is almost surely a surplus of people to love and time to find one. You will survive.
Here's some advice. Do not dwell on your mistakes, That is immature and stupid. Instead, gather your thoughts and keep moving forward in life. There are more important things in life than worrying about a childish breakup. Every second you waste is one you will not get back, So use them well. You will almost surely be okay.