You don't have to be a doormat! What is it that is making you feel that way? What changes can you make that will feel more empowering to you?
Don't lose sight of the positives... he did tell you about sister right? He is not hiding it. Also, he made that call to your parents, which must have been very difficult as well. That is something that demonstrates a willingness to work with you on this. Reward the positives.