Enemies with Benefits by Louisa George
The last man on earth she should hook up with! Poppy Spencer has discovered that there's one thing worse than Christmas alone in her flat, and that's spending it with Isaac Blair - her sworn-enemy-turned-reluctant-flatmate! And that's not just because he knows all her secrets...but because his sexy-as-sin smile and taut physique are making her all hot and flustered - despite the icy cold outside! Unless a casual hook-up is just the thing she needs...? It'll certainly break the simmering tension between them. The trouble is, with their history, this is going to be anything but casual...!