What are your ages? You sound young.
So she broke up with you and now she might want to get back together with you? How does it feel to be the backup boyfriend?
She also asked me several times yesterday whether i have a girlfriend. Do you think these words were directed towards me?
Yes, she wants to know if you are dating someone else. But never be the backup boyfriend. If you get back together with her, now she confirms you are easily manipulated and you will always be the backup boyfriend forever. So, if she broke up with you the first time either
1. you two are incompatible or
2. she doesn't know how to find the right person for her.
In either case you two should not get back together. Why would you be with someone who doesn't even know what they want?
I have a long time interest in psychology, specializing in relationship dynamics for 30 years.
(Please note, we give the best advice we can based on the information given in a post. For better advice, please include the age of all romantic partners.)