Excerpt from Son Hojun’s Interview with SURE magazine, April Issue (Yunho-only parts translated):

Q. Who have you met with, most recently?
Not too long ago, I met with (U-Know) Yunho. He was out on a break from the army. Whenever Yunho is on a break, we would meet. (Yoo) Yeon-suk (another celebrity)’s home is nearby so I see him often. And also, with the noonas and hyungs, I see other people as well.
Q. It seems as your best friend, U-Know Yunho is happier about your success more than anyone else.
That’s right. Yunho’s very happy. When I was hungry and having a hard time, Yunho had always taken care of me; but now, he has confidently said that since a soldier’s pay is not much, now hyung (i.e. Hojun) has to treat everything. So I treat everything including the meals.
Q. When you were starting out as well, you had expressed gratitude to U-Know Yunho.
He has been a friend that has taken care of me immensely from the time I was a nobody. My gratitude is still the same as ever. Even now, he gives me a lot of advice, and talks about me often to the people around (him). So even when I meet people for the first time, they had already heard a lot about me from Yunho and that we are close. We also hang around together a lot. We are friends who are really proud of and thankful to each other.
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Credits:
M&B magazine via @UltraTVXQ,
Translated by @snxy,
Shared by TVXQ! Express