And like a few people already mentioned, it's even worse if you romance him.
Aside from burning up in the sun and companions cracking up underhanded jokes about it, in the epilogue you have with him, the one on one conversation, our responses (and his) are so beyond shit.
So, during the romance we promised multiple times that we won't leave his side, that we'll be with him no matter what and yet that seems to be forgotten about in the "epilogue" conversation with him somehow. What I mean is, we HAVE to reassure him AGAIN that we do in fact want to be with him. If Larian is so hell bent on us breaking up with him or "going our own way" why not also add options like "we spoke about it already, I love you and I meant what I said before, I will stand by you no matter what"... it's just odd. And an amazing VA like Neil can't really save those lines either, even though you can tell he really pours his heart and his soul into his work. When actors are given crap script like that to work with there is only so much they do to save it. And he almost saves it.
