Redeemed — Caroline Hanson

Rebecca Finner lost her memory and almost died. More than once.
 
Lord Alistair Dalmaine, best friend of the man she loves, has been responsible for her almost-death more than once -- and is annoyed he hasn't finished the job. He's beautiful, terrifying, and potentially a traitor.
 
He's also the only one who can keep her alive while Leander attempts to stay in power.
 
Leander has a plan to make Lord Dalmaine keep Rebecca safe: Force a blood bond between the two so Alistair will want -- even need -- to keep Rebecca safe.
 
The massive downside? If she dies while they're bonded, her life will become eternal -- and forever entwined with Alistair's. Which, funnily enough, might just be a fate worse than death.

Please note this book has been revamped with a sparkly new cover and title by the publisher.