I can only speculate, you must decide...Maybe "feelings" was the wrong choice of word?
Our conversations seem more than just words. There is feeling behind the words?
The other girls I'm talking to the words are just words. A means to an end. The words don't have any life.
With this other girl the words are alive and breathing.
Is it not possible to like someone more or less based on your conversation with them? Maybe the "feeling" is a gut feeling. A positive gut feeling towards this women.
Or maybe I'm looking to fill a void and projecting.
Maybe you've just come out of a relationship and your emotions are all over the place......drunk driver at the wheel....
Maybe you have a few options and you are feeling that little charge of confidence that comes with options. that feeling that comes when spinning plates. This could be a positive. However, because your emotions are all over the place you are misdiagnosing what you are "feeling" and believing that the excitement is intact feelings for the unseen girl. False perception I say, false perception.
Maybe you are projecting your inner king onto this unseen woman and when she does not deliver....because she will not deliver, you'll be disappointed and wounded once more....
Whatever you conclude, it surely cannot be that you have feelings for an unknown entity. I never understand these "feelings" from the outset. Infatuations come and go oh to quickly and they are really a danger sign, as an infatuation will have you away with the fairies and not in objective control of your own emotions. When we lose objectivity, we can no longer see the situation nor the person clearly.
Where are you finding these said women? Are you on plenty of fatties?
You said you have a history of addiction, why don't you go to the other end of that anxiety spectrum and do something for the benefit of your mental and physical health. A new venture that has no history and no connection with your ex. A new sport. A martial art. No connection to your ex neither to other women. This is for you. Connect with new people. It will have an enormous positive impact on your life...
I'll make another suggestion. You said you were going to read the books in the list provided by a delightful young chap who has overcome the tragedy of a breakup and risen to become a better man. Reading is essential for a man's growth. The suggestion is to stay away from relationship books for the moment. Focus on your growth and your success. Your happiness. Then come at the relationship and pick up material with a better frame of mind.