You know you're in deep a**, when you've came to realisation of your own feelings. You start to think about that person more, talk about her/him more and without even putting a second thought into it, you've fallen in love. You don't know when and you don't know how...You just did. But the worst thing about it isn't that this person is unreachable, the worst is when you see that person struggle and you can do nothing about it.