Oh wow you sure got yourself in a jam ..
Why are you married if your in love with this woman would be my first question ?
You said you have been with her over 2 years ?
So why have you not done anything ?
Dose your wife know your in love with a much younger woman ?

I see the problem ..
you need to decide it's your wife or your g/f ?
I don't blame the girl for not wanting to be with you as you have been with the g/f for 2 years and your still married so why should she trust you ?

You are all talk and not action