I am so sorry that his has happened to you and taken away from what should have been one of the better years of your lives. I saw several girls like this growing up in high school, always on the verge of marrying, breaking up and then having a new boyfriend to marry three months later. I never understood it and it soured me. I refused to allow my children to date in high school because of it because I didn't want them hurt as you are hurting now. I am glad that you are not blaming yourself for this breakup. this is entirely about her and her immaturity. time will heal your pain and hopefully you will be able to look back on your experience in japan without her one day with good memories. afterall, the time you had with her was good for awhile, don't let it all be destroyed by the breakup. hang in there.