House-sitting a mansion for the summer sounds easy, right? Until my rich, single dad neighbor catches me in a compromising position. Hint: I'd just taken off my bikini top. He's billionaire Ethan Carter, a living legend in the tech world and father to two adorable little girls. Oh, and he's the kind of ruggedly handsome that belongs in a calendar with firefighters and puppies. "Welcome to the neighborhood," he says, grinning. The catch? He can afford to live here-I can't. Differences in income and age make anything more unthinkable, not to mention he's coming off a terrible divorce and has no time to himself. We agree we can't be anything more, even as neighborly drinks turn into not-so-neighborly kisses, and kisses turn into… well. Let's just say he finds creative ways for us to use my kitchen counter. He doesn't know if he's ready to trust again. I don't know if I'm ready to give my heart. But as summer ends, we might not have choice in the matter.