I'd say you've lost your mind, but you've always been like this

Yesterday morning when I walked into work, my coworker stopped doing whatever he was doing and started looking at me intently. Very intently.
"What?"
"Oh," he started almost guiltily. "Nothing..."
I cocked an eyebrow at him for a moment then turned to get down to work. He was still scrutinizing me. It seemed pretty clear to me that he wanted to ask me something I wouldn't like and was deciding how to put it.
He laughed awkwardly. "No... I was just trying to size you up... I'm trying to convince my girlfriend to introduce her friend to you."
My fingers paused on the keyboard. What?! It was as good of a question as any so I repeated it. I turned, looking incredulous. "What?" Then I thought of another question. "Why?"
He laughed awkwardly again. Why on earth was he off balance? "I don't know... I thought you guys might be a good match..."
"Oh...? And why is that?"
"Well, I dunno... I mean, she's single, you're single; she's white, you're white..."
"... Are you serious?" Now might have been a good time to remind him that my sister in law is Japanese. It occurred to me to let him know I wasn't interested in her for sure if she didn't believe in God. But it also occurred to me that he wouldn't understand or believe me. Instead, "If those are the only reasons, why me? Why not J?"
"Well you're a pretty stand-up guy. My girlfriend doesn't want her to get disappointed."
Blink
"I don't suppose anyone is concerned that I would be disappointed?"
"Well come on, you're a guy - you can't get disappointed."

This puts me in mind for something very romantic to tell some girl someday. Hey, I know I'm a guy so I don't have a very discriminating taste, and I'd be happy with just about anybody... But in my opinion, you're all right! And if that doesn't burn her barn, I'd then hit her with a rousing, Yaaar matey!