@Zoe191,
Dear Zoe,
The same feeling to you!!!I met a boy,he was so kind to me.He spent the spare time on staying with me.I reckon that we will go to marriage.
I could fully understand your feeling.So painful.You do not know why he broke up with you without any acceptable reasons.
Do not think about it.Let him go.
You should move on and concentrate on working,studying,etc.
Believe you could meet your Mr.right in the future.
Give some time to yourself,you will be OK.
Trust me,lovely girl!!!
Do not contact with him anymore.