Why can't he take me to his home?

I met Syrus through a friend and we started dating.

For the last five years, Syrus has loved and taken care of all my needs so much that my friends say he's the best thing that has ever happened to me.

I have met most of his siblings including his mother which I consider a huge step towards formalizing our relationship. However, he has never taken me where he stays although he says he lives with his sister.

We usually meet at my place and most weekends we travel upcountry just to have fun. I am scared that he be married.

How do I convince him take me where he stays? Help because I'm so tempted to start snooping around for answers.

Bella