The "Other Girl"

"Come to homecoming!"

The poster says.
“Support the Monarchs!
Have a great time at the dance!
Bring your sweetheart!
Tickets $6 for one person,
$10 for couples!”

The last part irks me the most.
Why should couples get a discount
While us lonely girls have to pay
The full price for a ticket
To a dance that’s no fun
If you don’t have a boyfriend anyway?