Your soon to be partner had come back from their shopping spree. They had picked up their package they received just today. They've been shopping at this new place called "Inflate-A-Partner", which is a shop where they can buy a sentient inflatable or balloon for themselves, to take care of as a lover.

Once home, your partner took you out of your packaging, admiring your design. Soon, they attached a nozzle to your air plug/balloon knot, watching as you inflated into your designated size.