She may wonder why you're so different from other hetero dudes who tend to be more absent-minded about Valentine's Day.
That being said, it's sort of crazy that the two hot chicks end up sucking face for SO MUCH LONGER than any of the hetero couples.
word-forming element meaning "other, different," from comb. form of Greek heteros "the other (of two), another, different;" first element meaning "one, at one, together," from PIE *sem- "one;" the second cognate with the second element in Latin al-ter, Gothic an-þar, Old English o-ðer "other."
hetero- or heter-
Other; different: heterocellular.
A prefix that means "different" or "other," as in heterophyllous, having different kinds of leaves.