She regrets her decision not to date you now that she realizes someone else has you.

This is human nature.

We are blind to what we have until we lose it.

She realized that she should have taken you on your offer or given you more of a chance.

This is especially true when she sees how happy this person you are now dating appears to be with you.

She now wants that happiness and is envious she isn’t getting it.

As I stated earlier, as human beings, we take what we have for granted until we lose it.

She believed you would continue fawning over her and pursuing her.

Having enjoyed the compliments you were giving her or how hard you were pursuing her, she grew to love the attention.

Now that you have directed that energy and interest to someone else, she misses it.

She now realizes that she wants it back.

She misses how you used to look at her so incessantly.

You are no longer talking to her or giving her compliments.

Nor are you trying to make her smile by telling jokes that were or weren’t funny.

That attention is now gone, as it has turned to this new person that you are dating.

She misses it.

As a result, she wants to date you even though she made you believe that she didn’t in the past or made it way too difficult for you to do.

Now, everything has changed because there is someone else that appears to be happy and is garnering the attention that you used to give her.

She wants to date you now that you are seeing someone else, believing that the person you are dating isn’t better than her.

She believes that she has a lot more to offer you than this other person does.

This is a person she doesn’t like.

She believes that this person is not on par with her own beauty or social credentials, and feels somewhat slighted that you would date this person who is so obviously not up to her level.

There is a competitive side of her that believes that you have taken a step down in dating this girl.

She wants to correct that, believing she is better than this girl.

She believes that she is a better match for you on every scale, from her physical appearance to her social status.

This is the competitive mindset that girls have when it comes to dating.

They make little effort with a guy who has been pursuing them until he moves on to another girl.

All of a sudden, they feel competitive and realize that they are better for the guy than who he has chosen.

This competitive mindset makes them change their mind about the guy and now they want to date him.