Lust. Lust is a strong, very strong word. It can hold a lot of meanings into it just like i hold feelings for her inside me. And now i curse myself for the biggest mistake i've made. I know its the biggest sin, biggest sin to fall in love with my best friends' girlfriend. - harry edward styles. disclaimer: this is just a story, though the characters are real, the story isn't so i hope you enjoy reading and no hate.