Thank you to those who completely deny a sibling's existence

I have a brother, but my parents completely deny his existence. completely. Is it weird? Yes, but you know what? At least I know who my brother is, and I can at least BE interested in him. Sometimes I even even try to find him online, get to know him and stuff. I know he appears to be a nice guy.<br><br>My problem is with my grandparents. Normally, the grandparents would know and would tell completely the truth. But no. They do not know ANYTHING and I can tell they have been instructed to deny his existence completely. Why? BECAUSE THEY DON'T WANT ME TO KNOW WHEN THEY'RE DEAD!<br><br>You see, my parents were afraid if they saw me talking to him, they would call them and complain and say shit. Maybe they were right, but to tell the grandparents to completely ignore? Is that necessary? I feel like my parents never thought about me and my grandparents, but about themselves. I wonder what my grandparents will think when they see the inevitable coming. Maybe they already know, but I sure hope they tell me who my brother is before they die.