UGHHHH

Why do I feel like when my sons here it's just gonna be a battle between me and my bf about how he's raised and who's he's raised around. I'm just hoping I'm gonna be a good mom. I can make the rules for my son right? If I don't want him around someone or doing something, it's up to me?? I just feel like my bf is gonna go against me and let him do what I don't want him doing or seeing.