Wondering Lost

A lot has happened in the last few months. I find myself in a situation that I think is going to explode beyond my control. I am currently in a relationship with someone who has to have complete control. I care about this person but I don't know if I can quit being who I am to make them happy. Plus there are major trust issues that have come up in the last week. Actualy they have been there the whole time, I have just choosen to ignore them has I feared that this situation I am in now would happen. I don't understand how someone can tell you that they want to be with you, but at the same time be with other people. I feel trapped, I am hurt, I feel mad that this person would betray me like this. But why do I stay... guilt maybe...I have one more month before things start to slow down, can I hold on long enough. I confront the problem head on, now I am feeling this might have been a huge mistake, but isn't being open and honest with each other what makes a relationship work. Can I ever trust again? Can I forgive and forget...forget no... The worst part about it is even though I gave her the opportunity to be straight up and honest with me, I still find out today that there are things she is lying about. Why the need to be secert and lie...she must know what she is doing is hurtful. What if it were I that was doing these things to her, I know she would be hurt just as much as me. She says she doesn't want to share me, but how can she expect me to share her with others. She lives in this world, masking her true self. Maybe when reality hits, it is going to hit hard.