I am sorry you're gong through this hazn. I hope that you receive the answers that you're looking for. I unfortunately am going through something similar. Your feelings resonate with me, only in my situation I am the "bad guy." I'm in a codependent relationship with someone who has no tangible emotion or interest in intimacy, and I have talked about separating. However, as a codependent I cave when he says he'll change... so we stay together and the cycle of emotional torment continues.

Thunder Bow is right-- be happy that you did not live together. And also be happy that this relationship is over! Your girlfriend was troubled and did not appear to be interested in growing.

Now is your time to grow! I suggest doing this by developing and strengthening your feelings about yourself. I recently started seeing a therapist for these exact reasons. Specifically, my goals in therapy are to improve my self esteem, to gain a sense of what my values and needs are, and to become more assertive. I'm working toward self-love and an identity that I build for myself; it sounds like you would be doing yourself a favor by pursuing these goals as well. Best of luck on your journey and keep your head up!