The Pretend Girlfriend

If you'd have told me a week ago that I'd be a billionaire's property........
Confident. Brilliant. Rich. Devastatingly handsome. Aiden Manning seemed to have it all. As naive as I was, when he seemed interested in me, I fell head over heels immediately.
But Aiden Manning's life held a dark side, one that he needed to hide at any cost. That's where I would come in. My trusting nature had caused me to owe money to the wrong people, and Aiden was right there and ready to help, if only I'd help him out as well. Just one signature on a piece of paper, and suddenly I was bound to him. The ground rules I had laid out at the beginning quickly melted away, and I found myself being drawn deeper and deeper into Aiden's life.
However, someone couldn't handle that. An even more powerful figure in Aiden's life would stop at nothing to break the two of us apart. It soon became clear that I might have to sacrifice everything I had to keep the two of us together.
Question: How long could we last?
**All credit goes to Lucy Lambert**