You have too. That's the only way.
I am a luhan biased, and I came to like Sehun ONLY becos of HunHan.. i only like those those. so now after Luhan left, I also left exo bcos I do not have a reason to stay.
I always try myself to get updated with Luhan.. and now I rarely see Sehun..

it does hurt. but we have to move on with the fact that they are separated now.. different industry, diff country.
you know what makes me feel at peace? is that.. I know, that HunHan stays.
Knowing Luhan, he still cares for his friends, we probably do not see it, but behind everything, he still keep in contact with them. ^^
Luhan knows how to treasure friends, so I'm sure, Sehun still claim the spot as his younger brother.
Kris & Xiumin is his same-line BFFs, Laogao is his other half, Lay is also a brother but Sehun.. is a brother to him, someone he always takes care of.
They use the same bag, same scarf, wore same watch on the same day, IG is banned is China but Sehun's have a weibo account.
Just open your eyes, and you will still see them. :)