Trying To Forget Him , But It's Hard!

I was so in love with this guy in the uni. He was my first love, It was love at first sight, there was an energy between us, I could feel when he was around , I felt that he was looking at me , without seeing. We thought the same things. Our love was celestial and if there is a soul-mate I know he was my soul-mate. We had  the same ideas about everything, But I never let him get too close to me, I don't know why. And now I have to forget him, but it's so hard. What I find more difficult is looking for someone, while there's no one and no one else seems to even like you and you feel like you're gonna be alone forever.