Thread exposing everything about Heechul and Momo's Relationship

1/ Heechul and Momo first met on Weekly Idol E249 (aired 2/5/2016). Momo aged 19 (international age). Momo is caught staring at Heechul during the entirety of the show. Momo was not a minor when they first met.
She was not even a minor when TWICE debuted (see my comment)

2/ Second time they meet was on Knowing Bros E27 (aired 4/6/2016). Kyunghoon answered her partner question correctly, but Heechul wanted to get it right so she gave him another question. Heechul answered her question and Momo chose to be partnered with Heechul.

3/ Heechul uploads his first ever Instagram selfie with Momo taken backstage of Suwon Super Concert on June 17, 2016. The hashtags are: #DontBeAfraid, #TWICE , #Momo.

4/ Next time they were on the same screen was on the broadcast of 21th of the Suwon Kpop Super Concert (aired 21/6/2016) where she was emceeing the event with Heechul. She has been caught stealing glances at him and he the same. He smiles when he spots her staring.

5/ Momo's The Show Instagram post (21/6/2016). She hashtags: #FirstMC, #Momo, #Chaeyoung, #Heechul, #Zhoumi, #SuperJuniorSunbaenim. Heechul comments: "Is that Nico my face?"

6/ The famous "Nico nico nii" happens on Weekly Idol E261 (aired 27/7/2016). Momo Nico Nico Nii's him, and asks to grab his hands to which he accepts. She sings a short song and Ohayo's him. She sets a new record of 136 BPMs. He says her "ohayo" was super cute.

7/ That day (27/7/16) Heechul uploads the clip onto his Instagram saying that he has no regrets. His hashtags are: #Momo, #Jorreujima, #Niconiconi, and #Niconiconi (in Japanese)

8/ In a game against Red Velvet's Irene in which she has to lower his heartrate (Weekly Idol E267, aired 2/9/2016). Heechul thinks back to the moment where she Nico Nico Nii'd him, and it increases his heartrate, causing the other MCs to ban the thinking of Momo.

9/ When playing a game where they have to see who is the best "superman", they had to defend their wife by knocking off the "wives'" image off the opponents head/ Heechul shouts out: "Momo-ya!" in the finals against Sangmin and wins. (Knowing Bros E49, aired 5/11/2016)

10/ Heechul posts on Instagram an image of him and Momo on Flower Crew saying it'll air that night (it would air the next week) on 7/11/2016. His hashtags are: #CherryBlossoms, #ThankYou , #Productions, #Blessyou, #ILoveYou. He thanks them for inviting Momo on the show for him.

11/ The staff of Flower Crew specifically invited Momo for Heechul. They have many cute moments like Heechul drawing Momo only and appealing to her, digging for clams together, Heechul catching a crab for Momo, and Heechul eating the fish eye that she fed him. (Aired 14/11/2016)

12/ (Knowing Bros E51, aired 19/11/2016) Universal Cowards were releasing their first song and wanted someone to be their main heroine. Sangmin suggests Momo because Heechul is heads over heels for her. JYPE manages to clear her schedule so she can participate.

13/ Heechul takes something off her nose, and when Youngchul tried to do the same, Heechul hits his hand away. Heechul jumps the gun and runs to Momo even when the other brothers haven't done anything yet. (Knowing Bros E51, aired 19/11/2016)

14/ Heechul uploads a selfie he took with her and Kyunghoon at the filming site. (19/11/2016)

15/ On Secretly Greatly E2 (aired 11/12/2016), Heechul says that if another girl group is to be tricked, he'll do it properly. Lee Gukjoo asks what if Momo comes on. Heechul says that if she's the one being tricked, then he can't trick her.

16/ TWICE makes their second full group appearance on Knowing Bros (E76, aired 20/5/2017). Momo says she's was upset that he chose Jin Seyeon over her. After answering her nickname correctly, she sends him a Moguri signal. He throws the final game so she can win the prize.

17/ The same day Heechul uploads 3 selfies with Momo, two taken that day and another taken the day they filmed the "Sweet Dreams" Music video. (20/5/2017)

18/ They meet again on We Like Zines E1 (aired 6/6/2017). Heechul correctly guesses all their nicknames again, and shows off his TWICE knowledge. They do a small skit where Heechul "confesses" to Momo and tries to open the bottle with an automatic bottle opener.

19/ Heechul goes to the TWICE concert on 18/6/2017). His friend @/jxsxnpk posts the picture of him holding the placard on his Instagram.

20/ November 9, 2017 (her birthday) Music Bank encore stage, as the other groups leave the stage, Heechul nods at Momo and she smiles as she turns around.

21/ November 13, 2017, Heechul uploads two selfies with Momo to his Instagram taken after the November 10th Music Bank.

22/ Heechul and Kyuhyun were spotted at TWICE's Concert 2018. It was posted on Heechul's friend's IG: @/jxsxnpk. (20/5/2018)

23/ On Amazing Saturday E12 (23/6/2018), it's revealed Heechul has only been to 3 concerts: Kyuhyun's, TWICE's 1st and TWICE's 2nd. Heechul chooses to go to TWICE's concert over fromis_9's after a madeup scenario where Momo invites him personally to the concert and afterparty.

24/ When playing a game in Knowing Bros E82 (1/7/2018) where the people guessing has to guess what each of the members are saying. The question was: ideal types. Heechul writes down and says "Momo". Heechul says they all were serious about it.

25/ In Momo's appearance on Amazing Saturday (E18, 4/8/18), they were playing a game where they have to identify the celebrity by just their eyes and mouth. Momo tries to answer Heechul's question but was beaten slightly by Narae, and Momo pouts because she couldn't get it.

26/ In the Knowing Bros backstage interview (aired 31/10/2018), Dahyun asks who she would choose between Kyunghoon and Heechul. Momo chooses Heechul because he has taken care of her since their debut.

27/ Momo chooses Heechul as her desired partner during TWICE's third KB appearance (E152, 3/11/2018), because he might be upset otherwise. They stick close to each other the entire episode. Heechul teases Momo for winning the game and she slaps him.

28/ Heechul uploads a selfie video with Momo and posts it on Instagram. Supposedly they were holding hands in the beginning parts of the video. (3/11/2018)

29/ January 2nd 2020, Market News reports that Heechul and Momo are dating. LabelSJ and JYPE confirm this news with EDaily. The report states that they started to get to know each other after being on a program together in 2017.
Article: https://www.soompi.com/article/1374761wpp/breaking-super-juniors-kim-heechul-and-twices-momo-confirmed-to-be-dating

30/ Heechul guests on Petionista Taengoo (aired 1/28/2020) and says that back in 2016 when he named his dog Zorr after Momo's part in Cheer Up, they were just acquaintances and didn't really know each other that well. Heechul officially denies dating for 3 years.

31/ On the same show Heechul that both their fans (his and Momo's) congratulated them both alot. Made him feel that the didn't spend 15 years for nothing.