I was stopped on the street today by a guy asking me if I’m single and if he could have my number

^ can’t tell if he was taking the piss because it was pitch black and I was wearing a fat black coat, but I politely declined and he politely walked off. Such a pleasant change from the usual cat-callers. But the fact that he couldn’t see me makes me think he was taking the piss..am I looking into it too much?