I love the book and the world Lauren Oliver has created. This is one of the few books I was really into it. The idea of curing the love is very original and it's also scary. I can't imagine a world without love. Life will be boring and no one will be actually happy. I like that Delirium isn't just about the love story between Alex and Lena, but it's also about family and friendship. I really like the friendship between Hana and Lena - best-friends in one sick world. I hope they won't ruin their friendship in the sequel. I must admit Lena's character is one of a few heroines who don't annoy me with their actions. About Alex... well, he is cute, sweet, kind and many other things and I like him, but he's not my favorite character of all time. I don't know why but still he is in my top ten list. 
 There is one thing I didn't like and that was the end. I think it was too fast. In one moment Lena and Hana were running and in next moment Lena was with Alex and they were caught. Anyway, I want to read the second book but it's still not published in my country. I hope it will be even better than the first one and I can't wait to meet Julian (I know about him and the TV series of course :D).