history: I have a small party at my house last night and didn't invite my best friend.  Now I feel bad about it. I have a small party at my house last night and didn't invite my best friend. Oh_comma_ really?  Was something wrong?  
current: No, I just though she wouln't get along with the other people I had, but I still feel bad I didn't even tell her about the party.
next: 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.