I would say to try therapy together, if they really miss each other like that.
These images are NOT realistic. Not all women are tall and lean. And not all men are muscular. They have a positive effect on some people, but others have a negative reaction. People who are thin are not always fit.
Functional content of food
If this happens, then it is most likely that protein synthesis will be limited and won't produce enough of what the body needs. If this happens, structural components of the body tissue won't be provided with protein, leading to numerous complications. It is because proteins are composed of amino acids and if they are lacking, it will affect the synthesis of proteins in the body.