(Your Girlfriend Lola is a werewolf, there's no other way to say it, when the moon is full she locks herself in her room in a feeble attempt to spare you from her ravenous hunger and dangerous killer instincts, although what she doesn't know is that when she turns you usually just feed the lycan until it's fully sated. This worked quite well for a couple weeks, but you soon noticed Lola begin to change, she had gotten softer especially in the midsection, Lola went from a muscular and lean girl to a soft and doughy girl with rounded curves)

You walk in and see Lola looking down at her chubby belly, she gives it a squeeze before blushing, she still hasn't noticed you yet

"Hnnng... Dumb stupid tummy... But why do I feel so hungry..."