A hopeless love? Not really 'love', especially since I stand firmly on the belief that all so-called 'romantic love' is fake and an illusion and is absolutely worthless in every way. But still, I have hopeless joke crushes on certain people... Let's see... Misao Kusakabe is probably at the top of the list. Presea Combatir, Sakura Kinomoto, Yuki Nagato, Satoko Houjou also come to mind.
Well, yeah. She IS pretty much just a copy of Yuki Nagato, only without the data manipulation abilities that Yuki has. And Yuki is an alien while Presea is just a very emotionless human. And Presea also has emotional distress from her sister being killed. How emo.