In keeping with Valentine’s traditions, many people are happy to give chocolate, cuddly stuffed animals and cards. Bring on the hearts pierced by Cupid’s arrow and declaring ones love. But what about the unrequited love, broken hearts and the celebration of being single because, hey, love is complicated. For those who are looking for confirmation that love is a temporary madness, check out any of these books. You’ll find dysfunctional relationships, stalking, unhealthy obsessions, disregard for sound reasoning and a 104 year old vampire who tries to force his 17 year old girlfriend to stop hanging out with her best friend. All this and more. Happy Valentine’s Day!