el cariño NOUN affection
Lo recuerdo con cariño. I remember him with affection.
In Spanish you can say that you ‘have affection for’ somebody, meaning that you’re very fond of them:
Les tengo mucho cariño. I’m very fond of them.
To say that you become fond of somebody, use tomar cariño a:
Le ha tomado cariño al gato. She has become fond of the cat.
When you’re more than fond of somebody, you can call him or her cariño (darling), but remember – it doesn’t change its ending depending on whether the person you’re speaking to is male or female.
Ven aquí, cariño. Come here, darling.