Their Fractured Souls by Ellie R Hunter

Mason and Myles are one soul in two bodies. Being identical twins, they act as one and dare anyone to try and mess with them. They may be Ricky’s sons, but it was their Grandpa who raised them. Pope taught them three rules to live by and they have stuck by them religiously until they ride to Mercy and everything changes.
Trouble, violence and strife are never far from the Lost Souls brothers and their trip to Mercy is no different. The Mercy chapter has been showing weakness to their enemies and after the trouble with Ellis, Cas is cleaning house.
Mason and Myles learned the hard way how dangerous the patch can be, how it’s not just for partying and women. What happens when one brother falls for a girl and the other doesn’t trust her as far as he could throw her?
The twins are about to be tested, and one isn’t so sure they’ll make it through to the brighter side.