[He snorts out a surprised laugh. Okay, maybe he should have expected "asteroid." Honey, please. Again, not the right time for hearts to be flying out of him and yet... Sigh.]
Oh, come on. At least say comet or something. [Basically funky looking rocks, but also with pretty ice tails.] Oh! Or, maybe a trans-neptunium object! Or a high velocity star.
[Cool objects that move at their own pace and own path, basically. /about to continue to list off more things before he realizes what he's doing and gets embarrassed. So anyway. asdlhgads;]
Or, I mean... whatever you want, I guess. I didn't really think through the metaphor.