Hard Limit by Chloe Fischer

Aiden’s story is the hottest one yet…

Aiden turned his back on his twin, the only blood family he had, a long time ago; their disagreement about how to use their powers driving a wedge between the two.
Then just when things with his little daughter get tense, Sage, a child psychologist appears in his life, and the connection between Aiden and her is cataclysmic.

Now his family has turned up, and it turns out he has not one, but three brothers, all with powers of their own. And they need his help to fight the organization that tore them all apart when he was a baby, and is now threatening his daughter.
But how can he drag Sage into this mess? He should cut her loose so she stays safe from Oculus…and from him.

Sage isn’t going to let him to put her somewhere safe and fight this battle without her. She’s going to be there, by his side…and in his bed, if she has anything to say about it. Whether he “allows” it or not.