I don't know what to say

I am a very trusting person. I never beleived it would happen in our relationship. If he does love me like he says, I could never forgive him. That's the way I am. If I am faithful I believe my partner should be too. There is nothing left in this relationship, and though the pain is sometimes unbearable....I have to go on. My son needs me. I wish i could be happy.