Based on this interview(5:14) where Yixing said that he was still in contact with Luhan.

"How was China?" Jongdae asks after he gets his mandatory kiss.

"Good." Yixing steers them into their shared room. "I met up with Lu ge." Jongdae hums in response. "He misses you."

Yixing watches as Jongdae's jaws tighten. A small sad smile graces his face as he watches Jongdae try and school his features into a balanced blend of indifference and interest. He knows he misses Luhan just as much as any of the other members but he's stubborn. He purposefully won't ask how Luhan is doing in hopes of Yixing telling him first and if Yixing doesn't, he'll give him the cold shoulders.

Yixing casually began unpacking. "Luhan told me to tell you call him sometime or to pick up your phone when he calls you."

Jongdae feigned surprise. "I didn't know he's been calling me."

Yixing pursed his lips in annoyance. "Jongdae-"

"So what did you bring back for me?" he asked excitedly, hoping to change the subject.

Yixing sighed. He really hated being the middle man sometimes. He dug in his bag and brought out a packet before handing it to Jongdae. "Very very very expensive coffee beans."

Jongdae squealed in happiness as he snatched the packet from Yixing. "Aww Xingxing, you didn't have to get this for me."

"I didn't. It's from Lu ge." Jongdae's breath hitched. "He remembered how you always wanted to try this brand but thought it was too expensive to buy, so he got it for you, he can afford it, he's making a lot of money now. He told me to tell you not to tell Umin hyung."

Jongdae's eyes began to water. "He remembered."

"Of course he did. You forget that he didn't leave us, he left the company."

Jongdae sniffed as he tried to keep the tears at bay. "I'm going to flaunt this in Minseok hyung's face."

"Or you could share it with him." Jongdae pouted and shook his head like a petulant child making Yixing sigh. "I'm going to take a shower."

As he left the room he heard muffled sobs. It hurt him to walk away and not comfort his boyfriend but he knew that Jongdae needed to be alone right now. Hopefully, after he's done, he'll finally contact Luhan.