As they entered their house, Ty told his parents, "I'm going to go see Lisa."
"You don't have to tell us now, you know," said Mark. "That's our agreement."
"Sure, and thank you for that," Ty said, "but I'm also not going to be secretive about it." He paused in thought for a moment. "Unless you prefer not to know?"
"No, Ty, it's fine to tell us if you want," June said. "It's just not required." Mark nodded in agreement.
"Great, thank you," Ty said. "Good night."
In his room, Ty knocked on the new door. "Come in," he heard Lisa answer. As he entered her room, she said, "You don't have to knock, Ty. You can come in any time."
Ty said, "Well, I wouldn't want to just walk in if you might be doing something you'd be embarassed about."
"What, shaving my legs? Masturbating?" Lisa asked. "Ty, there is _nothing_ that I do that I'd be embarassed for you to see. If you walked in on me masturbating, you should know that I'm thinking of you, and I'd want you to take over making love to me." She paused. "Or would that embarass _you_?"
"No," Ty said, "nothing you do is going to embarass me. And I feel the same way about you entering my room. I was just knocking out of courtesy. But if you prefer that I don't...?"
"Well, you can if it makes you more comfortable," Lisa said. "And I will knock, too, if you prefer."
"I hope you won't think I'm a prude, but for now I would be more comfortable knocking."
"Oh, the last thing I'd ever take you for is a prude," Lisa said, with a broad smile. "And speaking of not being a prude, I want to try another idea."
"I'm all ears," Ty said.
"No, not that," she said, laughing, and hugged him.