She told you that she would have chosen OM over you because IN THE MOMENT... the DRUNKEN MOMENT... under the pressure... she chose to say that, to you...
Maybe it was truth coming out... maybe she was just lashing out at you to tell you to back off because you were pressuring her...
only she knows...
She appears to feel guilty for saying what she said to you...
Let it go...
One day at a time...
Right now...
It appears that the two of you are moving forward, together...