Taeyeon...

Bowed and waved to Chen

Played with Suho

Patted Baekhyun's back

But when she obviously saw Sehun, she ignored his presence and walked pass him as if he didn't exist.

When usually Sehun would be the first person she'll talk to at the beginning of Hope performance.

Sehun...

Bowed to SNSD.

But when he obviously saw Taeyeon, he ignored her presence and acted as if she never passed him by. He didn't even care to bow to her when Tao who was standing ahead of him bowed to Taeyeon.

Usually when Sehun sees Taeyeon, he would immediately bow and talk to her.

Alright you two...did you make up yet? LOL. 

When they're mad at each other...

Oh my gosh Taeyeon, did you purposely looked away from Sehun when you approached him? OH MY GOSH!!! YOU TWO!! Frustrates me. LOL.

When they're happy with each other...