Am I wrong ?

I’m currently in a relationship with the father of my child this year will be 4 years we’ve been together. We have our own place he’s the only one that works . But I would like access to his bank account so I know where we’re at . Am I Wrong for wanting that information? It causes the biggest fight in our relationship because I would like to know where we’re at financially. His excuse for not letting me know because I see that as spending money . A little advice would be great since I don’t have anyone to talk to and the people I can talk to tells everyone my business help ?