Ryker (Steele Brothers #1‪)‬

Mackenzie Steele assumed she’d be with her husband forever. He's still her best friend and the father of her children. But when weeks turn into months without intimacy, she realizes she's too young to feel so old. She wants to feel desirable again, to find the woman Ryker fell in love with twenty years ago. And there's only one way to do that… by asking him to move out.

Ryker's blindsided when his wife tells him she wants to separate. He knew they’d hit a rough patch, but he’d never allowed himself to imagine his life without her. Now he has no choice. She seems happy without him, living life on her own terms, and he knows if he doesn’t find a place for himself in her new life, it will be too late to save his marriage.