Don't tempt fate, else you may one day find out just how "bad" it is.

[He says it to tease, and it doubles as a light little jab at the eccentricities of the family members of his that she does know. Were they talking about those that she doesn't, his tone would take on something a bit more deprecating, but as it stands, this is all in good fun.]

You may have known me for years, but a majority of that time has been as friends. There was an arms-length of restraint there that doesn't quite apply to how we might be now.