My Boyfriend's Sister Died...

My Boyfriend's Sister Died a couple days ago to Covid-19... She had four kids who she left to my boyfriend. They're moving into his apartment tomorrow... I was supposed to move in next month but now I don't want to. We both always said we didn't want kids and he's gone from none to FOUR! also plz don't tell me to break up him. That's not an option, I love him, but his nieces and nephews... That's too much. I told him to let his mother take them, but he told me his sister left them to him for a reason, so he's not sending them away! I just want things to go back to normal....

Edit: I'm getting a lot of hate on this post. What happened to it being okay for women to want to be child free. Isn't that one thing we fought for? The right to procreate? Am I so wrong for not want kids? Wow. Shows how supportive you guys are.

Edit: Okay I'm sorry guys. I'm reading more comments and I think I need to take a step back and think about everyone not just myself. I don't know how I would be if I lost my mother or sister. IDK if I'm cut out for this mom thing. My boyfriend just texted me.. He wants to come over to talk. I'm gonna try to get to know these kids. I may put off moving in with him for a while until I know what to do. I'm sorry I snapped back rude