BREAK UP! ****10 pts?

Please help! My bf and I have been dating for 4 months. My mother continues to oppose us going to eachothers houses and that we have to be doing productive things. He invited me to his camp overnight which I've done before and then she's invited him to my lake house and now all of a sudden he can't go and i cant go with him, even tho his parents are both going and his older sister and both my parents are gojng to my lake house. Him and I agree that a relationship shouldn't be this way. My bf thinks that she's gonna be the end of our relationship. I need help asap! How do I prevent her from being the cause of our break up???? Pleasee help!