Dp and I feeling very miffed, several friends have said "see you at the Birthday party", but its a party to which we have not been invited ,this is painful and rather embarrassing as the party givers are very good friends and people have assumed we would be there. We have not had any form of disagreement with them, but now feel we are far less important to them, than they are to us. Would you contact them to find out if there is a problem, or just leave it.