In this Moment by Elena Aitken

For eight years, Evie Rose has managed just fine on her own, running a business and raising her son, Jonah. But when Jonah’s father reappears on the scene, she risks losing everything if she can’t prove she provides a stable family environment for her son. And fast. After watching his parents love dissolve in heartache, Declan McCormick is single by choice, and has dedicated his life to helping others. So when the super sexy, fiercely independent, Evie Rose asks for his help, there’s no way he can say no.
Especially since she needs him to be her fake fiancée. After all, anything that means stealing a kiss or two, seems like a good deal.

It’s not supposed to be real, but the longer Evie spends with Declan, the closer they get and not only does it start to look real, it also starts to feel more real than anything she’s ever felt before. The only problem is, Declan only sees her as a project, just someone else he can help. And when everything starts to unravel, tough decisions have to be made, quickly. Evie will do anything to keep her son, and the life they’ve built. Even if it means closing her heart to something she’s never felt before. Declan didn’t think love was possible, but if he doesn’t open his eyes to see what’s in front him, he could lose the family he’s grown to love—forever.