Melbourne, Australia - It must be love! The way Mustard the dog stares at baby Mackenzie's bacon and cheese sandwich has true love written all over it.

The Golden Retriever from Melbourne can't take his eyes off his object of desire.

Even the little one seems to realize what he's really after!

Nevertheless, the sweet viral video of the exchange is as cute as can be.

Dogs Puppy falls in love at first sight with this giggling baby boy!

In it, the little girl smiles lovingly at her faithful companion on four paws.

But Mustard struggles with himself. After all, his owner is standing next to him filming.

The Golden Retriever obviously knows that he is not allowed to snatch anything from the baby. But the bread roll smells so good!

A close-up of his eager snout shows how much the dog is soaking up the scent of the food.

Little Mackenzie takes advantage of the situation in her own way, patting the four-legged friend on the nose several times. This must be torture for Mustard because the girl's fingers certainly smell of the bun, too.

Eventually, a minor scandal ensues.

Mustard gives in to his feelings and nibbles a small piece of the "forbidden fruit."

Mackenzie's mom then intervenes and warns her daughter not to put the bun in her mouth again after that,

In the meantime, Mustard's dog sibling Honey turns up and also begs for the rest of the bun.

Dogs Dog gets caught destroying new toy, and his reaction is priceless!

Meanwhile, Mackenzie goes back to munching on the dough.

Her mom doesn't have the heart to stop her – instead of intervening, the Australian prefers to continue filming the adorable scene.