J.M.
I am particularly sensitive on this subject, having a niece go through this when she was 5. This is a conversation you two need to have before the relationship goes further. If he doesn't know anything about what that role entails there are some really good books available on the subject. But the bottome line is he should really understand that he isn't just marrying you, he is getting the whole package. There shouldn't be any difference in how he treats your daughter and how he treats any children you have together in the future -- with the exception of disciplining which he should defer to you. How do they get along,have you paid attention to how he treats her? If her birth father is barely in her life, keep in mind that whoever you bring in will be the last one who has any influence on how she sees men. The chld always comes first. So you need to know if he has the capacity to love and even be responsible for her as if she was his own. Here is the reality about second marriages: the top two reasons they fail is 1) because you marry someone just like the person you divorced 2)because of the problems resulting from one or the others relationship with other spouse's child or children. Don't ignore the realities in hopes that it will get better. It may be a matter of education, I hope so. But some are just not capable of loving children who aren't theirs.