person A: I have a small party at my house last night and didn't invite my best friend.
person B: Oh_comma_ really?  Was something wrong?  
person A: No_comma_ I just though she wouln't get along with the other people I had_comma_ but I still feel bad I didn't even tell her about the party.
person B: I can understand your feelings; but I suspect you made the right decision.  Maybe it is something you can talk with your friend about.  A good friend will understand.