Get a grip on yourself. At 20, you don't know what Life is all about, regardless of how you perceive yourself. You, and your former partner, have another century of living to do and it behooves you to cry, shout, rant, and rave....and, grow emotionally. What you are experiencing is what every one of us who are much older than you have experienced. I know that you want answers and an assurance that this young woman will remain your significant other, but nobody can promise you that, not even her. You're both young, you've both spent the better part of the past 2 years together, and she's experiencing growing pains, just a you will.