you pass somebody in the halls... and you pass the narrative as well

You make your way through the halls with the clerk, passing by deserts and jungles alike. You bump shoulders with a passing young woman, right about your age by the look of her. Long blonde hair, blue eyes, decently impressive chest. She rubs her shoulder and gives you a quick, bitter look before moving on.
"Sorry," the clerk chuckles as you watch the girl follow another woman in the clerk's same uniform. "Lots of customers, not a lot of moving space..."
"You'd think you could make wider halls if you could make rooms with no visible ceiling," you murmur and move on to finding your lover... but you wonder....

"Jerk," you say, rubbing your shoulder. "He ran right into me and didn't even apologize."
The female clerk smiles back at you. "Don't mind them. Scott's too caught up in his job here anyway. Let's ignore them and find you your perfect partner, hm?"

You nod, blond hair and breasts bobbing slightly as you do. You take another glance at your letter, still hardly able to believe it any more than when you'd picked it up.

"Dear Madam,

You have been selected by means we choose not to reveal to be the recipient of one pet of your choice from the pet shop at the address we have provided. Be advised that the pets we have to offer are of an unusual nature and thus the collar is included. Simply take the collar with you to claim your pet and place the collar around her neck, then he or she will be yours. Be advised also that this is a once in a lifetime opportunity. Do not miss out or you will regret it for the rest of your life.

Sincerely,
The Staff at Animorph Pet Shop"

They seemed to know what they were saying when they put "he or she." You're at least bicurious, and you've caught yourself admiring as many men as women. The clerk promised to show you the way to the male divisions if you liked, and you really have trouble settling on the setting, let alone what gender or exact partner.