invention..?

k, so, in class, im supposed to write about an invention that could revolutionize the world as we know it. But, there are many things that you could improve that already exist. But, one thing that has stuck with me for a very long time is the fact of 2 people that like each other. So, when you like that 'other' person, you go from level to level trying anything that you could possibly think of to figure out and find out if that 'other' person feels the same way about you. Well, my invention is as big as a thermometer. It has a screen that has a transparent laser that scans the people who are in front of you, or around you. You select which person you want to find out the feelings for. So, you select the person, and this gadget basically tells you on a level of how much this person likes you in return. I honestly think, that if this was ever invented, it would be a big help to those who really want to know. It'd save you the humiliation of going through so much for no reason. It saves you from having to ask your friends to ask this 'other' person how they feel about you, and saves you the embarrassment of rejection. Because, let's face it, we all have been rejected. So have I. But, if this piece of amazing technology was to enter our lives, imagine how quickly we'd be able to find that one person that means the whole world to us.. -Forever&Always