He does

"I think it would only be fitting if you tried it first, in case it's dangerous." Ginny says as she walks over to a slightly suspicious Harry. He leans back a little as she holds the collar up.

"I... I'm not sure about that" Harry says as she approaches. She sits down on the couch and motions for Harry to sit besides her. He does, as she leans into him, her face and chest pointed at him. She puts a little pout on her face her hand moving to his leg, touching it gently

"I promise you'll enjoy it" she says, practically whispering in his ear. It sends a chill down Harry's spine, in a good way. Ginny knows that he can hardly resist her when she gets that tone, which is exactly what she wanted.

Harry lets out a sigh, "Okay, I guess I will." Without hesitation Ginny places the collar around his neck, making it snug but not restrictive. "It doesn't feel any..." she buckles it into place, "... different Mistress" Ginny smiles, almost wickedly as he addresses her that way. Harry has never been one who is dominating around his friends, but neither has he been one to submit either. This was a whole new feeling for him.

"On your knees, now" Ginny had become forceful, almost giddy when the collar gets locked into place. Harry doesn't resist, instead he gets on the floor and knees in front of Ginny. He avoids looking up at her, instead focusing on her feet.