A problem that has caused many divorces and much sorrow and grief for the children of broken homes.
Believe it or not, it is the very source of the rumoured happiness being more clear on couples of the same sex.
Indeed, such a thing exists, and it differs if the couple is male, or female. Therefore.
For men:
For women:
Idek if this is serious anymore so I might as well keep it up.
Male couple main problem:
Female couple main problem: