how do i get my mom to let my boyfriend come over to my house?

I'm 15 years old and have been dating my boyfriend since March but have liked him and talked about him since August 2015. I get a feeling my mom doesn't like him but she hasn't even tried to get to know him. I want him to be able to come over so my mom can get to know him and we can stop wasting our money by going to the movies every weekend to spend time with each other. How can I get my mom to allow him to come over?