Finding Redemption by Emilia Finn

This is not a standalone and the previous books in the series should be read first.
Jon Hart clawed his way out of hell. He sat in the fire for the first fifteen years of his life but he finally escaped with his baby sister and as few scars as he could get away with.
Jon swore his poisonous bloodline would die out with him.
That was until he met Casey Irvine, the one woman in the entire world that has him wishing things could be different.
He refuses to set into motion that same cycle from his past, but the thought of letting her go is just as impossible.
She’ll want more. Of course she will. She’s beautiful and perfect and deserves the world. Friends with benefits can only work for so long.
What painful secret has Jon been holding onto his entire life? A secret no one knows, not even his brothers or best friend.
Not all is at it seems though; Casey has her own secret, a secret big enough it might ruin their world and any chance they might have ever had at happiness.