Are you feeling a frosty chill from someone who’s usually warm and sweet? Ask them if something is wrong, and if they tell you “nothing,” don’t push it. Respect their boundaries and assume that if they wanted to talk to you about something, they just missed a perfect opportunity to do so. Don’t spend too much time thinking about why they’re different today. You will have too much of your own stuff to deal with. You can’t pry things out of people.