"Why not?" you say as she smiles.
She then hops down to give you some room.
You then get ears, a nose, and a mouth like hers, hands for feet, a long prehensile tail, black hair like that on your head covers all but your face
and hands (all four), and you shrink to half your height, and your clothes shrink with you to fit - there's even a hole for you tail.
"Hee-hee!" she says "You cute!"
"Thanks." you say in a high-pitch voice of your own.
The 2 of you then hug eachother and kiss.
"Me hungry" you say.
"Me too." she says "We order room-service?"
"Yes." you say.
So you 2 get your food, and start eating.
As monkey-humans, neither of you has any manners - you 2 stuff as much as you can into your mouth, even turning it into a contest!
You 2 have a food-fight, and by the end, you 2 are a mess, but neither of you care - as monkey-humans, you both like it that way.
You notice your girlfriend has lice, and start eating them out of her hair - they taste great! She then picks all of yours out, and she likes them
too!
You 2 then bounce on the bed, and have a pillow-fight, which ends in a tie.
"Wow!" you say "That most fun I have in years!"
"Me agree." she says "It like being kid again - me feel so free!"
Both of you sit down, and each eat a banana.
"Me could stay like this forever!" she says with a full mouth.
"Me too." you say with a full mouth "You want to? Me do, but me promise me be happy whatever you decide."