Relationship between EXO and SHINee~?

1. EXO-K's Kai (Kim Jongin) is a close friend of Taemin. Kai knew Taemin before his debut. He was mentioned in The SHINee World album "Thanks To" section

       - Jonghyun: "..a long way to go Jonginnie"

       - Key: "to our toddler Jongin, work hard!"

       - Minho: "..our cute toddler Jonginnie"

2. "Lucifer" Thanks to.
       - Minho: My beloved Joonmyun.. I really love you, got it? WORK HARD~!
       - Key: Chanyeol, Chanmi, thank you!
       - Taemin: Ah! That! Faster debut and meet up with me! You know who you are right? Guys, hehe
       - Jonghyun: Joonmyun-ah, the world is big, competition is everywhere, hehe; Jino, explode, everything inside you
       - Onew: Joonmyun-ah, hwaiting~
3. SHINee's Key was rapping for EXO's song, Two Moons

4. EXO-K's Chanyeol ( Park Chanyeol) is ex boyfriend of Kim Yejin (act for SHINee's MV of AMIGO)

5. EXO-K's Kai is looks like SHINee's Taemin
6. "The SHINee World" Thanks to.
Jonghyun: Kyuwan-hyung, bad guy Kyuwan, slim and tall Jongin, (...) Joonmyun-yah! I never use your name! (or I don't use your name, unclear situation)
Key: My Chanyeol, practice hard! And the to kids Moonkyu and Jongin, do well! The reliable Kyuwan-hyung, handsome fella Joonmyun-hyung, everyone work hard, let's meet on the top!
Minho: Kyuwan-hyung who has been very kind to me, the very handsome Kevin, our cutie pie Moonkyu, Jongin, Sehun, Chanyeol, I can't live without you guys... you guys knew it right? Joonmyun-hyung, thank you, give us more support in the future!

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Cr: http://dongholic.blogspot.com