Hermione raised an eyebrow at that. She lifted her wine glass for a sip, not sure if she believed it. Just wanted to talk? Suuuuure. There was something more going on there, or else Penny wouldn't have invited Percy over after ten years of them not having much contact--not having any contact--at all.
"Ron and I are a little different from you and Charlie," Hermione said gently, shaking her head. "First, we've been together for six years. We're a bit more serious, I think, than you and Charlie are. And second, I would never invite Viktor over for a homemade dinner without Ron being there, because I know that Ron would have a problem with it."
She sipped again. "I think it's a bit silly. Have you talked to Charlie about it?"