But you know it's a perfect couple when Chrom's first reaction after walking in on Robin is "But I..." (And his voice says "No." I kinda found that amusing, considering she just asked him to wait outside).
That part where Robin says "this is impossible" - I actually thought it would cut to a scene where Chrom's little sister Lissa jumps out of the bushes and yells "Oh, COME ON!!!"
...This is Lissa, by the way.