Promised that we will walk down together.
Suddenly,when you turn back,he/she is gone.
The person is going along,laughing,talking or playing happily with them.
What you do?
You walk down alone.
Follow them like a dog when they did not even ask you to join?
Would you want?
So,you walk down alone,with disappointment.
Alone,felt like crying,you walked down yourself.
The feeling...sour and unbearable.
After that,wanted to ignore the person totally.
Soon,felt regretted for ignoring the person,but the person don't feel regret or sorry at all.
You rejected other friends' invitation to join them just for the sake of his/hers,
what did he/she do instead?

You talk to them halfway,suddenly,nobody is listening to you.
You talk for so long about important things or some crappy stuff.
You turn to them,found out they are talking to others,
as if you are invisble and mute without a "HOLD ON FOR A WHILE".
Then,they turned to you said "Huh,can repeat?" or "What you saying?"
Got pissed?

Promised to hate some people totally together.
Suddenly,he/she said that they don't hate the person anymore.
You made that particular person hate you already,
yet he/she decided to be friends with that particular person again.
How do you feel?
When he/she goes with them,don't you feel left out?
Be humble again & go suck up to that person again?!
I won't do that.

Especially the first one,the feeling is horrible,it doesn't make any difference that you are being ditched or rather he/she walked out on you.