wHy iT HURTS letting go of someone.. even though they cheated on you ..

Good Day xconiex, Its my first time being in a relationship. I gave her my full trust and loyalty. But why is it she only cheated me? I love her very much. I cant live without her. I don't know if it is possible that we can love without pain. In every love, there's a pain. It is the irony of life. We have to encounter challenges in life that might be better or worst. We have to be sharpened by the trials of God. But how could we move on if we cannot let go the memories that we had shared together? It is very difficult to move on.. It's just like loosing someone who is very special for us... How I wish a can let her go.. I want her to be happy but, how about me? Should I continue sacrificing for her?

hahahahhaha this is so familiar to me,and until now m still bearing the pain bcos no matter how i tell myself i moved on and let go...the truth is he is still in my heart and in my soul..theres not a day or night that i havent thought of him..and its been more than a year now..and it is so painful to think that deep inside still i know he wont come back anymore,but i still kept hoping..if u know what i mean.i have been cheated twice..sad to say i am not a lucky lady...