Game freezes when getting married

So, this won't let me add any videos, but it would be easier to explain to you if you could see the video capture. Essentially, I was trying to play my game after EA's app updated My Sims 4 for Royalty (my second attempt at playing, might I add), which I also don't have.  And it was working fine for maybe the first 10 or so minutes until I switched lots to another household I was playing as and I was trying to have one of them propose because for some reason the relationship bits disappeared from that household after the update, and now I have to use MCC to like manually add them back in except for the ones that it won't let me. So, I have to go through the process of having them get married again.

But I was trying to have one of my sims proposed to the other one, and then suddenly the game stopped working/ responding to anything. I can't click the sims, I can't click the objects. Hovering over anything does absolutely nothing except tell me what the names are, and their current Relationship level to whoever I'm currently on, but I can't click them. Even when I pause the game, they're still moving/ buffering for the last thing that I had them doing. 

The only thing that I can click on that responds are is the side menu where you can see the Needs and relationship menu and all that other stuff. I can't even switch to another Sim. And if I try to exit the game, it's probably going to stop saving while I'm trying to leave and I'll have to force it shut like I did the last time. 

It hasn't produced any crash reports or error messages. MCC hasn't even reported anything, it's just all stopped working.