Is this ADD or something else?

You're having a conversation with someone who has ADD and supposedly loves you.  You're telling them you're going through a very hard time in your life.  They say a few words, but sound bored, detached and show no emotion or interest.  A few minutes later they ask how someone is doing they barely know.  When they ask about this person they sound very interested and concerned, even sweet.  What is up with that?