I didn't end up finding the original Pann posts... which I wanted to find over Telzone/Bestiz posts like this because I wanted to see what the best replies were. Here it is anyway.
Telzone: Victoria and Changmin, they definitely aren't just a normal relationship
Same cell phone chains.
Rumors about the two possibly dating date back as far as May 2011. (TN: The text is a bit blurry but the post basically says she heard from a friend in SM that Victoria and Changmin are dating, "isn't it shocking?")
K-Netizens thought it was suspicious how he even knew Victoria's sleeping habits.
Victoria and TVXQ on the same plane. Next to Victoria, you can see Changmin's bag and Yunho's shoes.
Victoria promoting TVXQ.
Victoria at a concert with Changmin and Kyuhyun.
Victoria "suddenly appears" when it's time to hold hands.
"Victoria's caller ring is 'She'. I found it while watching We Got Married!! It only played for about a second but I knew right away ㅋㅋㅋ I'm proud of myself. Victoria unni, I love you!"
"I'm more scared of the person who found all this. Looks like stars really don't have any private lives."
"Wouldn't it be safe to say they're dating at this point?"
"I'm really jealous she gets to sit next to them on the plane."
"I think they match each other... They're both nice and work hard."
"This is kind of scary... But let's congratulate them!! They're both adults and they're both very respectful celebrities so who cares if they're really dating!"
"They match.. They're both nice and I think they kind of resemble each other look wise too. I hope they can depend on each other in the competitive industry and have a happy love."
"I wonder why Changmin would date someone he would have trouble communicating with."