['I was a bit shocked that someone was so nice this morning after being so rotten yesterday.', "Oh yeah? It's always a bit suspicious when someone just changes their attitude like that.", "yes especially after they did a lot to you and haven't even said sorry.  I can't deal with people with such huge mood swings."]
They didn't even apologize? Wow, that's rude. Well, hopefully their friendlier mood will last a while.
I was a bit shocked that someone was so nice this morning after being so rotten yesterday. I can't deal with people with such huge mood swings.