Guarding His Heart by R. Cayden

A broken man, down on his luck and forced into a job he never wanted…

After a couple decades playing bodyguard for mobsters, Declan thought he’d finally managed to retire. Too bad his old boss had another idea.
At least the gig looked easy. Watching over some scientist with a rich father, secluded off in a mansion in the woods. Declan didn’t expect much more than quiet, boring days.
Then came the intruders. Home invaders with secret conspiracies? Those he could handle.
But love? Never saw the damn thing coming.

A young scientist, determined to do right in a dangerous world…

Sebastian’s path in life was set the second his father shipped him off to schools for the gifted.
Devoted to his research, he pretended the outside world didn’t exist at all. He had everything under control, until the day a threat surfaced: a plot to kidnap Sebastian and demand millions in ransom for his release.
Enter the bodyguard. Twenty years older, with silver hair, gleaming eyes, and tattoos crawling up his muscles. A man who growled when he talked and promised to keep Sebastian safe.
Declan built walls around his heart, and shy Sebastian knows not to fall for a man like that. But as the flames between them grow hotter, will Sebastian learn to open his own heart in time for something real to finally break through?