Various

• "I can write the saddest poem of all tonight. I loved her, and sometimes she loved me too.” — Pablo Neruda
• “Maybe in another universe, I deserve you.” — Gaby Dunn (http://thoughtcatalog.com/gaby-dunn/2012/05/maybe-in-another-universe-i-deserve-you/)
• "L’amore può portare a due cose. Alla felicità completa, o a una lenta e triste agonia." — Lady Oscar.
• “You weren’t the first page of my book, but since coming into it, I’d be damned if you weren’t on every page, in every sentence, until the very last word.” — Gabriel Kaczynski
• “Angry, and half in love with you, and tremendously sorry, I turned away.” — F. Scott Fitzgerald
• “The more he smiled, the more I wanted to hate him, and yet it was the very thing that made hating him impossible.” — J. McGuire
• "I loved her not for the way she danced with my angels, but for the way the sound of her name could silence my demons.” — Christopher Poindexter
• “He isn’t coming back, whispered my head. He has to, sobbed my heart.” — Rupi Kaur

From movies

• "The moon is always jealous of the heat of the day, just as the sun always longs for something dark and deep." — Alice Hoffman, Practical Magic
• “I’d rather fight with you, than make love with anyone else.” — A wedding Date
• “When two people love each other and they can't make that work, that's the real tragedy.” — Amy Dunne, Gone Girl

From books

• "Oh, how much evil your beauty is yet to cause." —The Last Days, Mikhail Bulgakov
• “I wish you to know that you have been the last dream of my soul.” — A Tale of Two Cities, Charles Dickens
• “If he loved you with all the power of his soul for a whole lifetime, he still couldn’t love you as much as I do in a single day.” — Wuthering Heights, Emily Brontë
• “He promised her that he would give her everything, everything she wanted, as men in love always do. And she trusted him despite herself, as women in love always do.” — The White Queen, Philippa Gregory