User blog comment:SeddieKissiOMG/Possible reasons why it could've been Melanie in iOMG/@comment-3037915-20110415211102

Reasons it isn't Melanie:

1. They would've shown that the twin was back.

2. Adding to the first point, everyone in the world believes that that was Sam. If Dan just showed up and said, "Heh heh, that was actually her twin," just imagine the outcome...

3. Point tht defeats all the rest: 'The Nick commercials said that "Sam'' was in love". Sam. Nick doesn't lie, and if they did, they would've been sued and it would've been news now.'''