barely know bfs parents

My brand I have been together for 3 years. He knows my family so well and fits in. I on the other hand don't fit in with his family since I have only met them a handful of times. They are always working. It just hit me now that they barely even know me. I understand some people work more than mine and some people just are homebodies like my family. But it just upsets me that I feel so disconnected. What can I do? My bf and I have been at his house plenty of times and made dinner for his family and they never showed cause they were working late. I grew up with a stay at home mom and my dad had flexible hours so this shocks me.