Cats might be quiet and seem independent; however, their expression of affection is subtle and significant and is entrenched in their inherent behavior. When you learn to read these signs, you do not doubt that the cats possess a rich emotional vocabulary intended to command trust, comfort, and closeness between themselves and individuals that they regard as safest.
Slow Blinking

When a cat stares at you and closes and opens its eyes gradually, it is making a sign of trust, which is mostly shown among cats that are comfortable with each other. Slow blinking is universally known by the animal behavior chimes as a cat sign of comfort and favorable emotional attachment.
Gentle Head Bumps

When a cat is rubbing its head on your face, it is marking you as safe and known by the scent glands on its face. This is the social behavior of bonding and the same activity cats do with fellow cats whom they are close to.
Following You Quietly

When you see a cat deciding to follow you room after room, then you know that they prefer your company and not that it requires to be on its feet all the time. This action reflects a sense of comfort, interest and longing to be close together in a common space.
Soft Vocal Sounds

Cats tend to save the gentler calls, like meows of softness or chirps to humans they know they can trust. These are sounds that are acquired as a communicative tool that cats have gained in order to communicate with people and not with other animals.
Exposing the Belly

When a cat ends up rolling on its back and exposing its belly, this indicates that it has very high degree of trust since it is made to be easily vulnerable physically. It may not necessarily mean that the cat wants you to touch it, but it is a good indication that this animal feels secure around you.
Relaxed Tail Movements

A tail raised with a slight curve at the end is a good emotional factor in cats. This position signifies satisfaction and assurance and is usually observed when a cat is going towards a person he/she feel safe with.
Choosing to Sleep Nearby

Cats are also alert creatures as such and by deciding to sleep near you, it is an indication of safety. This action is an indication that the cat regards you as one of its protective and reassuring elements in its living space.
Grooming You Gently

When a cat licks your skin or hair, it is performing a social act that is usually done with people one trusts. Grooming is good to make social ties stronger ,and it is one of the indications that the cat tolerates you as a member of its close community.
Responding to Your Voice

When a cat listens to you by moving its ears, gazing at you, or responding a call with a voice, the cat is recognizing and bonding. Research has established that cats are able to identify when their owner is talking to them and not to strangers, thus this action is a demonstration of attachment.
Bringing Small Objects

When the cat brings you the objects that are harmless, it is manifesting an instinct that is associated with sharing resources. Behavior professionals argue that this behavior would demonstrate trust and social attachment and not a demand of reward.