Mii says they are upset, with lightning bolt shapes around their head.

Okay so, I started playing tomodachi life living the dream, and one of my miis had yellow lighting bolt shapes around their head. When I went to check on them, they said that "they are feeling all over the place right now" and that they are feeling upset with another mii because of what they had said.

I wanted to ask, does this mean that they had a fight with that mii earlier? I've never heard of anyone talking about it which is why I'm curious!

Some things I should note about their relationship status: These two miis are currently mutually crushing on each other, and are also living with each other as well. I also noticed that with the character who is upset, their relationship used to say "ready to risk it all" but now it just says "likes a lot"