Hot and Bothered — Kelli Wolfe

We were supposed to be working on physics, but it was the chemistry between us that was taking up all of our attention.
Ashley had planned to go away on Spring Break with her roommates to find some of the romance and adventure that has been missing from her life. When a bout of flu sidelines her and puts her too far behind in her classes, though, she finds herself stuck at home on her own once again-until she convinces her brother's sexy best friend Jason to tutor her.
But Jason still thinks of her as a kid sister and seems determined not to notice that she's all grown up now. Can Ashley find the formula to get herself out of the friend zone and into Jason's arms?