There was a movie I really wanted to see. I invited a friend to go with me, but they decided they didn't want to go with me because they had already decided to go with another friend. 
The other day, there was a movie I wanted to see. I invited a friend to go with me, but they decided they didn't want to come because they were going with another friend. 
user
That really sucks... did you tell them how that made you feel? 
assistant
No...I guess I should have. I guess I really think they should have went with me too, or invited me to go with them. 
user
I would tell them.. and if it happens a 2nd time then they arent very good friends to have! :/
assistant