Love is a blind game.
The person, to whom you dote on, is blind to your love and ignores you.
This is pitiable.
Still you can make the person of your choice that is your ex girlfriend aware of your love.
The need is to take right moves with right way and in right direction.
Once you follow this, you will get your ex girlfriend back into your arms in eagerness.
Now your ex girlfriend is not ready to pay attention to you and ignoring you, then you should not give up efforts.
You should continue with your efforts to win your ex girlfriend's heart.
However, be sure that you should not follow her like a shadow every time.
Otherwise, she will mistake your love as a cheap and always remember that the person who is easily available with his love is considered as a 'cheap' in the eyes of girls in general.
So be careful that you should reveal your love towards her, but at the same time know her that you are not a cheap guy.
Try to be an outstanding personality.
Always remember that girls like the special person that is different from the crowd.
So always try to be an outstanding person.
Be a witty person in talks.
Make the other laugh at your jokes.
However, at the same time don't crack jokes frequently.
Otherwise others will mistake you as joker.
So avoid the extremes.
At the same time, you should know to pinpoint on the serious social matters and current affairs.
This will show your mature nature and it will reveal that you are a responsible and thinking person about the social issues.
However, don't go on speaking always on social problems.
Otherwise, others will avoid you supposing a 'boring' person.
That is why attain a golden middle.
Be a balanced personality in walks and talks.
You bet, you will find your ex girlfriend attracted towards you within some weeks and she will ask for friendship.
At this time, you shall reveal your love feelings towards her.
Best of luck!