I don't think there's any reason to swing from one extreme to the other. If you loved this woman, or had very strong feelings for her, that was all a good thing. The fact that it is over now means that there was something there that was not "it" right? it was not the perfect love we are all looking for, because love is a mutual arrangement. It takes two active partners who both want it, and want to work hard for it.

I lost the only love of my life. She divorced me, because of my mental illness. Talk about having your heart broken, right? I was married to her, we were planning on a family. All that ended, and I was left in ruins. So I think I have some understanding of your frustration. And anger. It's all normal. Have a broken heart for now, and feel a great pang of pain when you think of her with someone else. I do still. Even after 2 years, I still get angry at the thought of her with some other guy. That might never go away. Pain is something we learn from, not dwell in, right?

Hell, if nor fore her, I would have never understood what being in love feels like. So I thank her for that, and you might want to look at your time with her as an opportunity to learn about a woman, explore her, and remember her. There is no time-line for moving on, you just will. In time. No girl in the short term will be able to distract you sufficiently. You are just going to be in pain for a while, and when that is over, you'll have all those positive memories of her to recall, and all the things she taught you.

Love her memory. Nothing more. I feel you.