It wasn't something that was uncomfortable for him. It was his life, he'd chosen his path, and frankly, he'd enjoyed it while it lasted. It wasn't a story he reserved for a specific date or time either. With other girls anyway. But the other girls he'd known were a little less... Nice. Nice was definitely the word. I mean, come on. The girl took care of sick animals for a living.
But she'd asked, so he'd tell, "Nah it's cool." He shrugged nonchalantly and took a drink from his coffee, "I used to be a cage fighter. I guess I took it outside the ring a few too many times, and I kinda just decided it was time to stop." Not completely on his own, but still.