SOLVED. Adult Paranormal Romance. Looking for a book without the total

[Rowena]

The book was a sponsored add on Facebook and it’s about a gamma werewolf named heather Nicholas that’s been cheated on by her mate with her sister.
The caption reads at the top.
My sister's arms were wrapped around Michael. They were undressed and... and making love.

[Pony]

The Feral Heart by Rory McCauley-Hayman?

[Rowena]

Omg thank you so much I just googled it and yes it’s the one thank you thank you I know how I’m spending my Sunday

[Pony]

You're welcome :)