Just a Girl in a Queue (Double Limerick)

There once was a girl ~ Mary Lou
Fairest of hair, eyes of blue.
She courted a boy
His christian name was Roy
But he left her for somebody new.

Mary cried - whate'er could she do?
She was only a girl in a queue!
Roy was the rover,
Charming as clover
But he married a sweet Peggy Sue.