A billionaire friends-to-lovers fake romance with plenty of heat with a guaranteed HEA and no cliffhangers!

I only needed her to be with me for a year, but how do I convince her to stay?

Cole:
No one knows me better than Faith. When I'm in the biggest fight of my life. She is the only one I think to turn to.
It was only supposed to be temporary. I never imagined I would fall in love with her. Or want to make her mine.

Faith:
Whatever Cole asks of me I will do. When he asks me to marry him, I can’t say no. Despite the fact that I'm in love with him.
And I know he'll never love me. He says it will only be for a year. But how to I convince him to make it forever?