Turkey Call Short

we met in Australia during my study and shared a house for over 6 months she returned back in her country before than I did.we have had promised eachother to make up our life in switzerland but I did somethin stupid in australia when I was drunk and as a bad luck,her friends were there too.They called her for telling that...she called me to break up but I could convinced her in few weeks.I came back in Turkey and after a short time went to see her in switzerland and every 3 months we visited eachother..everything was great apart from her imagination and rememberance of this story.She couldnt take her out of it and kept thinking I would do such a stupid thing again.Eventhough its been more than 1 year that event happened,she broke up 1 month ago but said she will try to return me....I'm so in love with her..is there something I can do?I'm so ashemed of what I have done and she knows it too.I want her back...please hellp mee