Based on a 90:2014 episode(45:25) when Sehun said that Chen was really romantic and all the members agreed with him. This got me thinking about how exactly would they know if Chen is romantic or not since he apparently doesn't have a girlfriend or boyfriend. 

Lay had just gotten up from his nap. He went to open the door but found that it was locked from the outside. He sighed. Living in a dorm full of boys meant that you get pranked on a daily basis.

He pounded on the door. "Guys! Anyone out there! Guys!!"

"Yixing, what's up?" asked Luhan from outside the door.

Yixing's eyes widened in annoyance. "What's up? Well I'm locked in my room, that's what's up."

"Oh. Ok then bye."

Lay heard footsteps walk away from door and started pounding the door again. "Luhan! Luhan! Don't you dare walk away from me! Luhan."

"Luhan's gone Yixing." said another voice.

"Minseok hyung. Oh thank God! Please open the door." Lay begged.

"I'm afraid I can't do that. Sorry Yixing." Before he too walked away.

Lay frowned. Minseok would normally never go along with anyone's prank. He started pounding on the door again, hoping that one of s would be kind enough to open it.

"Shut up Lay! Stop pounding the door." yelled Kris.

"Kris let me out. I swear if you don't-"

"Threaten me all you like it's not going to work. Just sit tight for a couple of minutes, we'll let you out eventually."

Lay sighed before sliding down the door. He guessed what Kris had said was right. He decided to pull out his phone and text his boyfriend.

To Chenchen <3

Baobei, the members have locked me in my room. Let me out please? (●´ω｀●) ( ･‿･)♡

From Chenchen <3

Sorry jagiya, I can't do that  >‿‿◕ Hold on for a bit longer. (╯3╰)

Lay sighed again before pocketing his phone. Not even his boyfriend wants to help him. He decided to clear his mind and mediate for a while. His meditation was broken when someone opened the door and Lay fell on his back. He looked up and saw that it was Suho and he was dressed formally.

"Mr Zhang, please come with me." Suho said before walking away.

Lay scrambled to his feet and jogged to keep up with him. "What's going on? Why are you wearing a suit? Where are we going?"

Joonmyun ignored him and lead him to the living room. The living room was dark except for the small table in the middle which was illuminated by candle light. The room was also filled with all of s who were dressed exactly like Suho. When he walked in, music started playing and the members started singing. That's when Lay noticed that Chen was smiling next to the table.

He walked up to Chen. "Why are the members singing 'Mirotic'?"

Chen pulled him down for a quick kiss. "Because this was the song that was playing when I first met you. You were dancing so beautifully and I thought, 'damn, I wouldn't mind letting that man under my skin'."

Yixing laughed. "You are so romantic." he said sarcastically.

Jongdae slapped his shoulder. "Hey! It's not my fault that you were dancing to this song when we first met."

Lay wrapped his arms around Chen's waist. "So you set up a candlelit dinner and got our members to sing for the anniversary of when we first met?" Chen bit his lip and nodded. "That really is romantic."

Yixing bent down to give Jongdae a slow, deep kiss which had some of the members gagging and others awwing.

"Can we go now?" asked Sehun in irritation.

Yixing broke away from the kiss. "Yes. Thank you so much everyone."

He bowed to everyone as they left the living room. He surveyed the table and found a full 3 course meal for 2 on it. He walked to Jongdae's side and pulled out the chair so Jongdae could sit down, then walked to his side to sit down.

"How did you manage to get all the members' cooperation?"

"Aegyo." Chen said as he lifted his chopsticks to Lay's mouth.

Lay swallowed and moaned. "This is so good! Who cooked?"

Chen smirked. "I did." Lay raised his eyebrow. "Ok, Chanyeol and Kyungsoo helped too just to make sure I didn't do anything wrong."

Lay smiled and held one of Chen's hands. "Well it's perfect, thank you. I'm sorry I didn't prepare anything."

Jongdae shrugged and fed him another piece. "You don't have to do anything. It's not like we decided that we were going to celebrate this."

"But it should be celebrated. If I hadn't met you, I would never have loved you and I honestly can't imagine a life like that." Lay fed Chen a piece of dinner.

Jongdae blushed. "You cheese ball."

Yixing smirked. "Well I guess I'll just have to give you your present in bed."

Jongdae blushed harder and slapped his hand. "Shut up and eat."

"Ooh, someone's eager to get dinner finished and go to bed." Yixing teased as he fed him another piece.

Jongdae whined and Yixing laughed. They continued to feed each other dinner and spent a lovely evening celebrating the anniversary of when they first met.