opposites attract...

"Beautiful Disaster" by Jamie McGuire is about Abby, a college freshman, who is trying to make a fresh start in life by leaving behind a life she wishes didn't exist.  Travis, the "one-night-stand" guy, is also a street fighter and very aggressive.

Abby makes a bet with Travis.  If Travis wins, she must live with him for one month.  If Abby wins, Travis must restrain from sex for one month.  There is obvious chemistry between these two, but it is up and down and there is a constant battle.  However, it works for them and it was a good and easy read.