Both my parents love each other. But they don't really act affectionate towards one another (hugs, kisses, loving words). They show it in different ways.
Such as: They sleep in separate rooms (mother sleeps in the living room while my dad sleeps in the bedroom). However, it is because she loves him that she does that since he has insomnia and is a light sleeper, so she sleeps in the living room to prevent any noises (rolling around, breathing, getting up at night etc) so that he can hopefully get a good night's rest.
Strange how things work though, they used to hate each other since it was an arranged marriage. And at one point, were close to divorcing each other, but decided to stay around for me & my brother's sake.