I think you can feel very ver atraccted for someone at first sigth and ofcourse know that if you meet it would be terrific. There is a boy I have seen 3 times during about 10 years, the first time I saw him we just couldn't stop staring to each other and I felt something really strong, like something in the chest and the stomach , a few of years later I saw him again but didn't realise in the first moment he was the sameone, we kept staring to each other and I felt exactly the same and then I realised it was him, he was the same one, I have seen him a third time and it just happened the same of the other two times. The three times in about 10 years and I felt the same.