Four years and still not met his family?

We’ve been together four years, right? And not once has he brought me home to meet his parents. Not even for tea. His cousins know about me, I hear, but I’ve never been invited. Last time I asked, he said they’re old-fashioned and need time. Time for what? We’re not kids anymore. I cook for him, manage his schedule, even paid half when his car broke down — I’m basically his wife already, but I feel like a secret. His aunt saw us at a hawker centre last month and asked who I was. He said ‘friend’. Friend lah. I was so embarrassed I wanted to sink into the floor. My mom keeps asking when he’s going to *formalise* things. I don’t even know how to reply anymore. Sometimes I wonder if he’s ashamed or just doesn’t take us seriously. Every Chinese New Year, he goes home alone. I stay with my sister and pretend everything’s fine. Is this normal? Can or not? If he loves you, doesn’t he want his family to know you? Or am I just being too emotional. Confirm I’m not the problem here.