His to Call Home by Siobhan Smile

Sasha
There was one thing I hadn't planned to do and that was to move back to the city where I grew up. Not that I had any bad memories. I had loving parents, but they thought it was long past time I started dating again. I was a single dad with a demanding job as a firefighter and EMT. I didn't have time to look for someone. That's what I thought until I started at my station and met someone who changed everything.
Crash (Wes)My parents considered me the disappointment among their three children. I was nothing like them. So at eighteen, I left and cut off all contact. My job as a firefighter was the only thing that kept me going. I wasn't an attractive man, and I'd accepted that. When the new guy, Sasha Price, started working with me, he destroyed my comfort zone. I didn't like the way he made me feel. I wasn't supposed to like him, but I just couldn't keep him out of my head.
(CW/TW: Brief mentions of infertility and past pregnancy loss.)