Resolved Question

I had a dream. I was in a classroom full of computers, and on the computer opposite me, there was my ex-lover. Beside him was his girlfriend. I was looking at her thinking how pretty she was. I didnt want him to see me so i hid behind the computer. Then all of a sudden, i spilt some water on the computer table. This water was scattered on the table but just in one area. Then ... all of a sudden i heard my ex-lover shout my name in a angry way. I didnt know what had happened until i looked accross and noticed that everybody had water spilt on their table, aswell as me! It was in exactly the same position as mine, scattered in the same area. All of a sudden, my mum appeared in the dream and she had witnessed it happening. She said to me "Thats a sign of good luck, its a symbol of your emotions." Can you help me to discover the meaning of this dream?