"I'm glad you have the week off!" says Sydney.
Then gently kissing you: "You know, I feel bad about the way I played the game last week..."
You express surprise at this.
Then you try to reassure her: you tell her not to worry about it, and that you actually enjoyed it, as it was incredibly arousing.
The memory of that teasing causes your member to stiffen, reinforcing what you have been telling her.