lady of convenience
A woman who gets used like a toilet, called a girlfriend, and thrown away when the guy finds someone better. She’s just a quick fix until he finds a new toy.
He brought her to the gala, but when he needed a quick lay, she was just a backup plan.
She was his girlfriend until he found a hotter one and forgot about her.
He used her like a toilet, then left her hanging when he got a new toy.