I'm bored so I'm doing this ||

1. TVXQ

• Yunho said that it's not hard for him to get close to Krystal and he always called Krystal 'Princess' when they meet each other.
• Changmin and Krystal was told to look at each other's eyes and Krystal is the one that laugh first then followed by Changmin. That was mean that Changmin really want to get close to her and Krystal just felt awkward around him.

2. Super Junior

• Leetuek called Krystal for advise when he want to visit his wife on a set but some of you also know that he close to Yoona too.
• In come to play, when Krystal was in trouble when she need to perform, Leetuek comes out and dance with her.
• Leetuek  "Why did you choose me as your duet partner? Is it because you wanted to win , or because you promised to get married to me a long time ago?". Leetuek is President of Girls. Krystal is not the only one that he asked before.
• If you notice, Siwon and Krystal always whispering or talking to each other when they're around. 
• I never notice that Yesung actually pretty close with Krystal until I realize that everytime f(suju) takes picture, they always near each other and I've watch a video where Yesung can't stay away from Krystal and keep whispering to her.
• Heechul tweet a picture and said Krystal is preety
• Eunhyuk post a picture of Krystal and Ryeowook together at Dream Concert.
• A few years ago, when Eunhyuk won 3rd place and Krystal was called to give them medals, Eunhyuk hugged her.
• Krystal choose Eunhyuk to cheer for her even though there were Onew, Minho and Donghae there.

3. Girl's Generation (not include Jessica since they're sisters)

• Hyoyeon comes to hug Krystal when she was finished running.
• Yoona and Krystal pretend like they are looking at a mirror when they meet each other.
• Seohyun said that she and Krystal understand each other since they both are the youngest in their group.
• Tiffany and Taeyeon are pretty close to Krystal because I've seen a picture where they're whispering.
• Sunny patted her head when Jessica compare her height and Krystal.

4. Shinee

• Onew and Krystal not really that close but when Onew looks at Krystal, his expression changes not like he stare to other people.
• Krystal said that she's impress by Onew's voice on their first meet.
• Jonghyun is the closest to Krystal in SM. They always next  to each other and play a round together.
• On Krystal's 17th Birthday, Jonghyun give Krystal a perfume as a present.
• Key choose Krystal as his duet for My First Kiss because he thinks that Krystal suit to be his partner and for the song.
• Key and Krystal take so many picture in one day (Japan Charity Concert)
• At SMTown LA, Key accidentely do something to Krystal and she was chasing him. Also Jonghyun who and she chase after him.
• Minho teach Krystal high jump when Dream Team and there for Krystal when she about to run in Idol Championship
• Minho was really panic when Krystal did High jump especially when 'Dream Team Woman Special'
• In King of Idol, Minho stand next to Krystal right after she ends her wrestling.
• Minho choose Krystal twice to be his partner.
• Taemin called Krystal over to do a bow after performance.
• Krystal ask Taemin how to dance Gee'
• Taemin comes to Krystal right after she finished running and support her when she's running.

5. Exo (They just debut so, there's no moment)

• Krystal mention Suho in her 'Pinocchio's Thanks To'
• Kai and Sehun are same age as her.

Last but not least

"At the time, I said that I'd get married to all of the oppas in the company. One of them even kissed me" Krystal

I'm not include f(x) because there are so moments!!

Forgive me if there's wrong or no included in here :)