Ohhhh so you think about me? [Yes, he's totally going to turn this into an opportunity for teasing.]

Oh, let me guess. You fell madly in love with the dashing, mysterious Robin and decided to become Batgirl and scale the rooftops in search of him. And then I grow up to be handsome and fabulously wealthy and you find yourself completely, hopelessly smitten.

[He can't keep a straight face when he says any of that. Pffff.]