Perhaps it's when I can freely and truly be myself. That includes when I can talk with them non-stop because the conversation goes smoothly, when I can tell them even the unimportant thing, and when I can be a bit touchy (I am not a physical touch of person but I will comfortably do that with the person I trust). I can say I am quite a hopeless romantic because after all the things that I mention, I believe in what my heart feels. I believe my heart will know it and thus, I will know it too when I am in love.