What to do in this relationship

Dude... you won't feel much better by "getting her back". However, you should definately dump her if you are having trust issues.

are you sure you really want her back? i hardly understand you. after all what she did to you, you're still able to love her and wants to do everything to win her back? she doesn't deserve you! wake up man! you had a life ahead of you much better than being with someone like her! leave her alone! do you think if you win her back she'll be faithful to you? she can do it now, and she can do it again! my advise to you, move on! forgiving her would be fine but wanting her back? i think its too much of foolishness! ~ happy mylotting!

First will you be happy see her cry? if yes then you don't love her any more, why not let her go because letting her go is sacrificial love.