I have a few "friends" that are real flakes. I've known them for years and years, but they blow me off so easily. I've tried a lot of different tactics, but nothing seems to stop the problem. For example: This guy that I have known since I was born and I recently started college at the same place. We live three blocks away from each other. I have spent a good amount of time at his house and he has come to mine (just friends), so I know he is comfortable spending time with me. He has a tendency to text me with a basic "hey I'll be coming over tonight" or "You want to come by for dinner" and then without warning, he will no show. What's going on with this? I don't know what to do.