"There's...there's one way I can prove it," she said quietly. "I don't think you've noticed it because when we're naked you're...erm...distracted," she said, blushing deeply, before moving her top enough to reveal a scar across the lower half of her stomach. "I...I don't know if you remember, but when I was younger me and mum were involved in a car accident. Dad and Sam were out of the country at the time, the only person who came and visited me was you..." She fell quiet for a moment. "The picture in the locket, it was taken the first time you visited me after the accident."