Girl of Nightmares (Anna #2), Kendare Blake
Okay so not totally red... but still absolutely stunning!
Julie and R, Warm Bodies, Isaac Marion
I could probably put hundreds of couples in this one, but since I haven't mentioned Warm Bodies on this post I thought I'd highlight them.
The Harry Potter series, J.K. Rowling
However, in actual fact, all of my books. I learned my lesson from letting my mums friend borrow my copy of The Philosphers Stone, oh... about 10-11 years ago... The woman moved house and I never saw that copy again. To be fair, that copy wasn't actually mine. It was my brothers but he never read it hence I adopted it and I just had to rebuy it.
P.S. I Love You, Cecelia Ahern
I am never reading that book again on public transport. I will save it for the confines of my own home.