"Responsibility" should be Nicole Keyes's middle name. After all, not many people would sacrifice their lives to run the family bakery and raise a younger sibling. But with Nicole's twin sister now blissfully married and her younger sis turning out more femme fatale than girl-next-door, super reliable Nicole is getting sick of putting everyone else's needs first! <P>Enter Hawk. The deliciously sexy former NFL player offers Nicole a taste of the freedom she craves. Hawk may know the way, blindfolded, to her sweet spot, but Nicole's not about to let him get close enough to break her heart. Of course, she might not have a choice in the matter if Hawk's past keeps getting in the way of their present.…