"Hmm, well, I've only just met you, and I do already know another goddess or two, so I'm not sure yet if I can say..."

Don't be fooled, that wouldn't stop him from saying whatever he wanted anyway, whether truth or blatant lie. He's just going for the option most likely to continue to get a rise out of her.

"Now, now, a flower is still beautiful no matter whose garden it's in."

That wasn't meant as a double entendre, either. Probably.