Probably a bit of both. [He does tend to wing things when necessary, after all.]

I did thank him for the gift, which was why I made this inquiry at all. I did ask him why the heart, but he refused to tell me. [The smile turns somewhat more into a smirk.]

I'm somewhat uncertain whether he thought I wouldn't do as he suggested and ask the humans or those here who have been to Earth, or if he was just his usual self.

[Difficult, that was. Probably a bit of both. And Starscream had probably not thought it'd have meant something as "deep" as this gift seemingly implied.]