Examples:

• It was just cupboard love, and what she really wanted was the money she used to get from him.
• The cat shows nothing but cupboard love; it only comes around when it's hungry.
• Whenever my nephew visits, he showers me with hugs and kisses, but it's just cupboard love—he's after my cookies.
• The dog is so affectionate, but I know it's just cupboard love; he's hoping for a treat.
• The toddler's smiles and cuddles are sweet, but it's clear it's just cupboard love—he wants his favorite snack.
• The stray cat keeps rubbing against my legs, but it's obvious it's only interested in cupboard love; it's hoping for some food.
• The child is charming and affectionate, but it's easy to see it's just cupboard love; she's looking for a candy.
• Whenever I open the treat jar, my dog suddenly becomes very affectionate, but I know it's just cupboard love.
• The parrot showers its owner with affectionate chirps and preens his hair, but it's simply cupboard love; it wants a snack.
• The toddler's sudden displays of affection are heartwarming, but it's clear it's just cupboard love—he wants his favorite snack.
• The kitten snuggles up to its owner, purring contentedly, but it's just cupboard love—it wants to be fed.