I know a lot of people who at one point in their life, fell in love. Falling in love though means the possibility of falling out of love. The act of falling out of love is a painful one, and for some, it is the hardest task to go through.
But you CAN do it. You just have to believe that no matter what everything will be ok. You can forget about the guy or girl. You can find someone else. You can look at a picture of that person without getting sad. You can talk about that person without breaking out into sobs.
It has been done before. So try and move on, be strong. I believe in you.