Society always believe that women think too much, and men think too little.
That perception should change, now.
You have to start doing something that would make her feel that you are thinking about her all the time.
You are thinking about her a lot, than it seems impossible to live without her now that you too are apart.
Moreover, make her think again about how she used to think about you all the time not too long ago.
Remind her of the first time you two met each other.
You can ask her to go out on a normal day, and bring her there.
The conversation does not have to be about the two of you.
Let the environment speaks for itself.
Take a look around, and once in a while, remind her again on how the place looks familiar, just like how you used to see it the first time when you met her.
Tell her jokingly about the situation that day.
It does not matter if your first meeting was not romantic.
The purpose of remembering the day was to remind both of you again the first time you discover each other's presence in the world.
Go to a new place together.
It can be anywhere.
Remembering the past does not guarantee the future.
You two would need a new place for a new start.
It might sounds like you are trying to win her heart all over again.
Well, that is exactly the point.
You are trying to date her again.
Then the two of you would definitely need new memories to back up the imperfection of the past.
Since you have known her personality, it would not be hard for you to pick a place where she would love to be.
Think hard about choosing the place.
Women put much emphasize on the environment around them.
Now that she had remembered again of the first time you two met, and the new place that promise her a new future, make her think about you.
You, the guy she once fell in love with.
Remind her again of your characteristics that made her yours back then.
It can be your clumsiness, your charm, or simply your smile.
Everything else can be perfect, but if you do not present yourself as who she would fell in love with again, nothing can help you to win her back.
Ultimately, she still needs to think about you.
Thinking too much can lead to a lot of negative emotions.
But it would only lead to that direction if you make her think about all the 'what if' in your relationship.
When you want to win her back, you want to make sure that all she thinks is about who you are as a person, not more and not less.
You want her to think simply.
You want her to think about you.
And you should know best about how to make your ex girlfriend think about you, she would want to win you back.