They are referencing what the image portrays, which is quite funny. Here is my take in describing it if the image was not clear for you:

1.the woman paints a perfect picture of how her partner should be

2.then she marries the fake 'image' of that person. The illusion she has built up inside her head.

3. She discovers the true person behind her false image.

4. She cries in disappointment that the true person behind her built up fake image is not what she expected.

Oddly enough, I feel that there is a positive spin to the last image: the man is holding the woman, who trusts him enough to be vulnerable in his arms. It speaks of the potential for the relationship to still work.

He's saying that we idealize our partner at first, but this picture is guaranteed to be torn down and replaced by the real person behind it.