I am so sorry to hear you're going through this, so am I . Letting go of the hopes and expectations of a life you want with the person you love is the hardest thing I have ever had to go through myself. Just know that you tried and did your best throughout. You can't make a relationship work out alone, it takes two people that love each other to fight for it to survive. When we realize that we were the only ones fighting, it's easier to let go. I have spoken many of your same words to my DH and I know exactly what you feel. Take life one day at a time right now. You will see yourself going into survival mode until you really begin accepting that it is over and done with. Think about being happy again. You deserve that and so does your daughter. Don't give up!