I asked a girl for her number and I feel like an idiot now. How about this, ever happen to you?
Everyone has moments like that when trying to start a relationship! Why does it make you feel like an idiot?
When she was writing her number, she gave me a fake one.
Some people are cruel like that, and I'm sorry to hear it happened to you. However, you should not blame and attack yourself for it. Self-attack only leads to pain and suffering for you.
I bet if I hadn't asked, she wouldn't have given it to me either. I am going to recover but it will take time.
Yes take some time for you, and get your feelings intact again. Take as much time as you need, but never give up trying to ask people for their phone number. One day you will meet the person of your dreams.