Also we have been living together for 1.5 years and was having the best time of our life. We really enjoyed each others company, but she had to move country because she couldnt stay in mine. I also asked if something was wrong and she said no

I feel for you man.
I was with mine 20 years,caught her with another guy but better knowing than not knowing

Totally feel your pain. Keep in mind jealousy is a form of weakness and insecurity to women.  They loose respect for you as a man when they see this.  Also apologizing multiple times and tippy toeing around waiting to get dumped is not attractive either.  This is a terrible way to have to spend your days.  I know this will be painful but the time you give her for space, do not contact her every min checking on her or calling.  Anything less than giving her her space will push her away even more.  You have to rebuild her attraction for you.  Use this time to think of what attracted her to you originally.  What qualities she likes.  Go back to those things and be all of them when she reaches out to you.  Don't be too available right away and also live your life and get out in the meantime.  Anything to get your mind off of her.  This way if she does decide to break up with you, you have a head start on rebuilding self worth and the band-aid getting ripped off wont be so painful.  If she sees you in that old maybe somewhat new light she might even reconsider.  Good Luck and I hope this helps bring some insight to the situation. 

Women will use their feelings as a weapon to win arguments. They will claim their feelings take president over who is actually making sensible points during a discussion. Not all women but most women are like this. I had a girl that cheated on me and refused to take responsibility for it. The only argument she had and thought mattered were her feelings. I'm sure your girlfriends has said mean and insensitive things to you from time to time. Do you take this as an excuse to end the relationship? There's an inequality of caring in this relationship. Clearly she is willing to walk away from you at any time for any reason and clearly you are willing to do anything to appease her. How do you think this is going to end? Not well for you I can tell you that. Grow some balls and realize that you do not exist to be your girlfriends emotional tampon. If I were you I would be the first walk away. She will either learn to respect you more and stop behaving like a brat or she will walk away herself which by the sounds of things might be a good thing. This is a girl who you will never be able to address your concerns with and who can not take any criticism. If you can't negotiate with a woman then you have no ability to solve problems with her. You will just a relationship where you tread on eggshells, do everything she tells you to do until she finally gets bored of you and throws you away.