Demonic what would you say was your biggest loss about losing this relationship?
1. Was it the loss of a person who you believe uniquely "got you" unlike other girls?
If its this Interceptors inner game advice in just about all his posts is golden and required reading by you.
Also if she made you feel like no other just keep in mind that its a chemical reaction that you crave like a drug addict, you're on a dopamine high that is tied into her validating your self worth by wanting you. Its an ego thing and an addiction thing and it takes action via inner game work, turning your interests to something productive like hobbies and such and continually gaming new girls to break free of along with the passage of time and distance from the relationship.
2. Was it the loss of your trust overall towards women because of the way this girl dealt with you such as however it ended between you two being extremely negative despite your confiding your emotions in her so much?
The second one makes it hard to move forward because you can no longer be your unguarded self and trust any new girl you get involved with. You don't feel you can have true intimacy with her or connect with her and not later be betrayed by her like the earlier girl did to you in some way.
You want this connection with someone, with a girl but because of your recent experience you may be on some level disgusted with women or at least untrusting of them because of how this girl treated you and you don't trust any of them to be any different which leaves you depressed because the connection that you want may never be fulfilled and all you'll be able to content yourself with is shallow empty sexual experiences.
If its this one I think what you need is some more distance and time to heal and also to remember any women you've known in your life family or otherwise that have been there for you and that you've been able to trust or look to any successful relationships that you know of from friends or family as proof that trustworthy women do exist in order to rebuild your trust for women.
Then when you go on the hunt for a new girlfriend again and you get one you can try something that has never failed me in my life for friends or anyone. I stopped using this system in my life because I had been brainwashed by the feminist society that it was paranoid and I didn't have this place that encouraged me to think for myself against all the brainwashing so I got screwed over badly more than once by dropping my system but since re-adopting it and when I used it before getting brainwashed it has never failed me. Its really simple. I call it the two year test. It basically goes just like it says. If someone sticks by your side for two years you can probably start to trust them. It may not be completely fullproof but it can help to weed out the people that are going to be there for you as opposed to the people that only want to take from you and move on be they friends or lovers.
So to clarify by my plan not having you trust anyone you get involved with for at least two years it doesn't mean you act all that differently towards them than you would now except that until the two years has passed and they are still around, until that milestone is reached you avoid sharing very deep emotional stuff with them from your past or things that can hurt you if they should turn on you. Until this time passes and they have proven themselves to you through the test of time you can keep them at what I would call an arm's length of intimacy.
Give them just enough of you to believe that you both are connected and that you care but nothing more than that until they have proven themselves through the test of time.
3. Was the loss something else?