I'm not sure what to do. I am lost as to what is right and what is wrong?
I'm also confused as to the "haq" of each woman as well as to what I should do to right my wrongs.
To right the wrongs, first and foremost, whenever we sin we need to repent to Allah and remove ourselves from the haram environment.
As it stands, since you are not married to this second woman, you have no rights over her and she has no rights over you.
Your current wife, however, has rights over you.
I see three options:
i. Forget this second woman and the promise you made her. Cut her out of your life and remain with your wife.
ii. Marry the new woman, convincing her to become your second wife.
iii. Divorce your first wife and marry the second, since you seem to be distant already (I'm assuming this is due to difficulties in relationship and not being in different countries, for example).